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"This software program is licensed subject to the GNU General Public License 

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(GPL). Version 2, June 1991, available at 

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<http://www.fsf.org/copyleft/gpl.html>"

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GNU General Public License 

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Version 2, June 1991

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Copyright (C) 1989, 1991 Free Software Foundation, Inc.  

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59 Temple Place - Suite 330, Boston, MA  02111-1307, USA

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Everyone is permitted to copy and distribute verbatim copies of this license

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document, but changing it is not allowed.

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Preamble

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The licenses for most software are designed to take away your freedom to 

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share and change it. By contrast, the GNU General Public License is intended

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to guarantee your freedom to share and change free software--to make sure 

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the software is free for all its users. This General Public License applies 

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to most of the Free Software Foundation's software and to any other program 

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whose authors commit to using it. (Some other Free Software Foundation 

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software is covered by the GNU Library General Public License instead.) You 

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can apply it to your programs, too.

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When we speak of free software, we are referring to freedom, not price. Our

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General Public Licenses are designed to make sure that you have the freedom 

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to distribute copies of free software (and charge for this service if you 

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wish), that you receive source code or can get it if you want it, that you 

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can change the software or use pieces of it in new free programs; and that 

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you know you can do these things.

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To protect your rights, we need to make restrictions that forbid anyone to 

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deny you these rights or to ask you to surrender the rights. These 

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restrictions translate to certain responsibilities for you if you distribute

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copies of the software, or if you modify it.

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For example, if you distribute copies of such a program, whether gratis or 

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for a fee, you must give the recipients all the rights that you have. You 

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must make sure that they, too, receive or can get the source code. And you 

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must show them these terms so they know their rights.

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We protect your rights with two steps: (1) copyright the software, and (2) 

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offer you this license which gives you legal permission to copy, distribute 

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and/or modify the software. 

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Also, for each author's protection and ours, we want to make certain that 

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everyone understands that there is no warranty for this free software. If 

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the software is modified by someone else and passed on, we want its 

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recipients to know that what they have is not the original, so that any 

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problems introduced by others will not reflect on the original authors' 

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reputations. 

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Finally, any free program is threatened constantly by software patents. We 

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wish to avoid the danger that redistributors of a free program will 

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individually obtain patent licenses, in effect making the program 

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proprietary. To prevent this, we have made it clear that any patent must be 

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licensed for everyone's free use or not licensed at all. 

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The precise terms and conditions for copying, distribution and modification 

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follow. 

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TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

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0. This License applies to any program or other work which contains a notice

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   placed by the copyright holder saying it may be distributed under the 

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   terms of this General Public License. The "Program", below, refers to any

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   such program or work, and a "work based on the Program" means either the 

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   Program or any derivative work under copyright law: that is to say, a 

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   work containing the Program or a portion of it, either verbatim or with 

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   modifications and/or translated into another language. (Hereinafter, 

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   translation is included without limitation in the term "modification".) 

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   Each licensee is addressed as "you". 

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   Activities other than copying, distribution and modification are not 

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   covered by this License; they are outside its scope. The act of running 

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   the Program is not restricted, and the output from the Program is covered 

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   only if its contents constitute a work based on the Program (independent 

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   of having been made by running the Program). Whether that is true depends

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   on what the Program does. 

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1. You may copy and distribute verbatim copies of the Program's source code 

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   as you receive it, in any medium, provided that you conspicuously and 

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   appropriately publish on each copy an appropriate copyright notice and 

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   disclaimer of warranty; keep intact all the notices that refer to this 

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   License and to the absence of any warranty; and give any other recipients 

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   of the Program a copy of this License along with the Program. 

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   You may charge a fee for the physical act of transferring a copy, and you 

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   may at your option offer warranty protection in exchange for a fee. 

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2. You may modify your copy or copies of the Program or any portion of it, 

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   thus forming a work based on the Program, and copy and distribute such 

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   modifications or work under the terms of Section 1 above, provided that 

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   you also meet all of these conditions: 

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   * a) You must cause the modified files to carry prominent notices stating 

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        that you changed the files and the date of any change. 

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   * b) You must cause any work that you distribute or publish, that in 

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        whole or in part contains or is derived from the Program or any part 

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        thereof, to be licensed as a whole at no charge to all third parties

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        under the terms of this License. 

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   * c) If the modified program normally reads commands interactively when 

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        run, you must cause it, when started running for such interactive 

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        use in the most ordinary way, to print or display an announcement 

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        including an appropriate copyright notice and a notice that there is

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        no warranty (or else, saying that you provide a warranty) and that 

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        users may redistribute the program under these conditions, and 

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        telling the user how to view a copy of this License. (Exception: if 

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        the Program itself is interactive but does not normally print such 

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        an announcement, your work based on the Program is not required to 

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        print an announcement.) 

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   These requirements apply to the modified work as a whole. If identifiable 

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   sections of that work are not derived from the Program, and can be 

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   reasonably considered independent and separate works in themselves, then 

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   this License, and its terms, do not apply to those sections when you 

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   distribute them as separate works. But when you distribute the same 

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   sections as part of a whole which is a work based on the Program, the 

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   distribution of the whole must be on the terms of this License, whose 

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   permissions for other licensees extend to the entire whole, and thus to 

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   each and every part regardless of who wrote it. 

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   Thus, it is not the intent of this section to claim rights or contest 

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   your rights to work written entirely by you; rather, the intent is to 

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   exercise the right to control the distribution of derivative or 

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   collective works based on the Program. 

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   In addition, mere aggregation of another work not based on the Program 

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   with the Program (or with a work based on the Program) on a volume of a 

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   storage or distribution medium does not bring the other work under the 

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   scope of this License. 

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3. You may copy and distribute the Program (or a work based on it, under 

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   Section 2) in object code or executable form under the terms of Sections 

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   1 and 2 above provided that you also do one of the following: 

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   * a) Accompany it with the complete corresponding machine-readable source 

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        code, which must be distributed under the terms of Sections 1 and 2 

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        above on a medium customarily used for software interchange; or, 

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   * b) Accompany it with a written offer, valid for at least three years, 

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        to give any third party, for a charge no more than your cost of 

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        physically performing source distribution, a complete machine-

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        readable copy of the corresponding source code, to be distributed 

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        under the terms of Sections 1 and 2 above on a medium customarily 

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        used for software interchange; or, 

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   * c) Accompany it with the information you received as to the offer to 

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        distribute corresponding source code. (This alternative is allowed 

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        only for noncommercial distribution and only if you received the 

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        program in object code or executable form with such an offer, in 

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        accord with Subsection b above.) 

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   The source code for a work means the preferred form of the work for 

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   making modifications to it. For an executable work, complete source code 

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   means all the source code for all modules it contains, plus any 

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   associated interface definition files, plus the scripts used to control 

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   compilation and installation of the executable. However, as a special 

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   exception, the source code distributed need not include anything that is 

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   normally distributed (in either source or binary form) with the major 

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   components (compiler, kernel, and so on) of the operating system on which

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   the executable runs, unless that component itself accompanies the 

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   executable. 

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   If distribution of executable or object code is made by offering access 

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   to copy from a designated place, then offering equivalent access to copy 

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   the source code from the same place counts as distribution of the source 

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   code, even though third parties are not compelled to copy the source 

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   along with the object code. 

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4. You may not copy, modify, sublicense, or distribute the Program except as

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   expressly provided under this License. Any attempt otherwise to copy, 

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   modify, sublicense or distribute the Program is void, and will 

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   automatically terminate your rights under this License. However, parties 

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   who have received copies, or rights, from you under this License will not

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   have their licenses terminated so long as such parties remain in full 

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   compliance. 

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5. You are not required to accept this License, since you have not signed 

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   it. However, nothing else grants you permission to modify or distribute 

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   the Program or its derivative works. These actions are prohibited by law 

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   if you do not accept this License. Therefore, by modifying or 

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   distributing the Program (or any work based on the Program), you 

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   indicate your acceptance of this License to do so, and all its terms and

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   conditions for copying, distributing or modifying the Program or works 

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   based on it. 

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6. Each time you redistribute the Program (or any work based on the 

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   Program), the recipient automatically receives a license from the 

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   original licensor to copy, distribute or modify the Program subject to 

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   these terms and conditions. You may not impose any further restrictions 

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   on the recipients' exercise of the rights granted herein. You are not 

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   responsible for enforcing compliance by third parties to this License. 

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7. If, as a consequence of a court judgment or allegation of patent 

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   infringement or for any other reason (not limited to patent issues), 

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   conditions are imposed on you (whether by court order, agreement or 

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   otherwise) that contradict the conditions of this License, they do not 

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   excuse you from the conditions of this License. If you cannot distribute 

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   so as to satisfy simultaneously your obligations under this License and 

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   any other pertinent obligations, then as a consequence you may not 

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   distribute the Program at all. For example, if a patent license would 

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   not permit royalty-free redistribution of the Program by all those who 

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   receive copies directly or indirectly through you, then the only way you 

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   could satisfy both it and this License would be to refrain entirely from 

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   distribution of the Program. 

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   If any portion of this section is held invalid or unenforceable under any

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   particular circumstance, the balance of the section is intended to apply

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   and the section as a whole is intended to apply in other circumstances. 

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   It is not the purpose of this section to induce you to infringe any 

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   patents or other property right claims or to contest validity of any 

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   such claims; this section has the sole purpose of protecting the 

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   integrity of the free software distribution system, which is implemented 

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   by public license practices. Many people have made generous contributions

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   to the wide range of software distributed through that system in 

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   reliance on consistent application of that system; it is up to the 

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   author/donor to decide if he or she is willing to distribute software 

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   through any other system and a licensee cannot impose that choice. 

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   This section is intended to make thoroughly clear what is believed to be 

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   a consequence of the rest of this License. 

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8. If the distribution and/or use of the Program is restricted in certain 

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   countries either by patents or by copyrighted interfaces, the original 

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   copyright holder who places the Program under this License may add an 

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   explicit geographical distribution limitation excluding those countries, 

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   so that distribution is permitted only in or among countries not thus 

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   excluded. In such case, this License incorporates the limitation as if 

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   written in the body of this License. 

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9. The Free Software Foundation may publish revised and/or new versions of 

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   the General Public License from time to time. Such new versions will be 

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   similar in spirit to the present version, but may differ in detail to 

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   address new problems or concerns. 

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   Each version is given a distinguishing version number. If the Program 

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   specifies a version number of this License which applies to it and "any 

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   later version", you have the option of following the terms and 

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   conditions either of that version or of any later version published by 

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   the Free Software Foundation. If the Program does not specify a version 

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   number of this License, you may choose any version ever published by the 

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   Free Software Foundation. 

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10. If you wish to incorporate parts of the Program into other free programs

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    whose distribution conditions are different, write to the author to ask 

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    for permission. For software which is copyrighted by the Free Software 

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    Foundation, write to the Free Software Foundation; we sometimes make 

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    exceptions for this. Our decision will be guided by the two goals of 

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    preserving the free status of all derivatives of our free software and 

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    of promoting the sharing and reuse of software generally. 

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   NO WARRANTY

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11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY 

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    FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN 

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    OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 

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    PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER 

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    EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 

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    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE 

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    ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH 

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    YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL 

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    NECESSARY SERVICING, REPAIR OR CORRECTION. 

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12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 

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    WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 

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    REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR 

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    DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL 

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    DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM 

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    (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED 

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    INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF 

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    THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR 

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    OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 

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END OF TERMS AND CONDITIONS

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How to Apply These Terms to Your New Programs

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If you develop a new program, and you want it to be of the greatest 

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possible use to the public, the best way to achieve this is to make it free 

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software which everyone can redistribute and change under these terms. 

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To do so, attach the following notices to the program. It is safest to 

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attach them to the start of each source file to most effectively convey the

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exclusion of warranty; and each file should have at least the "copyright" 

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line and a pointer to where the full notice is found. 

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one line to give the program's name and an idea of what it does.

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Copyright (C) yyyy  name of author

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This program is free software; you can redistribute it and/or modify it 

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under the terms of the GNU General Public License as published by the Free 

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Software Foundation; either version 2 of the License, or (at your option) 

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any later version.

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This program is distributed in the hope that it will be useful, but WITHOUT 

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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 

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FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for 

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more details.

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You should have received a copy of the GNU General Public License along with

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this program; if not, write to the Free Software Foundation, Inc., 59 

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Temple Place - Suite 330, Boston, MA  02111-1307, USA.

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Also add information on how to contact you by electronic and paper mail. 

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If the program is interactive, make it output a short notice like this when 

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it starts in an interactive mode: 

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Gnomovision version 69, Copyright (C) year name of author Gnomovision comes 

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with ABSOLUTELY NO WARRANTY; for details type 'show w'.  This is free 

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software, and you are welcome to redistribute it under certain conditions; 

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type 'show c' for details.

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The hypothetical commands 'show w' and 'show c' should show the appropriate 

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parts of the General Public License. Of course, the commands you use may be 

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called something other than 'show w' and 'show c'; they could even be 

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mouse-clicks or menu items--whatever suits your program. 

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You should also get your employer (if you work as a programmer) or your 

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school, if any, to sign a "copyright disclaimer" for the program, if 

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necessary. Here is a sample; alter the names: 

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Yoyodyne, Inc., hereby disclaims all copyright interest in the program 

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'Gnomovision' (which makes passes at compilers) written by James Hacker.

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signature of Ty Coon, 1 April 1989

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Ty Coon, President of Vice

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This General Public License does not permit incorporating your program into 

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proprietary programs. If your program is a subroutine library, you may 

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consider it more useful to permit linking proprietary applications with the 

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library. If this is what you want to do, use the GNU Library General Public 

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License instead of this License.