Make semantic error message compatible with beremiz

Merge

Fixes to make handling of standard functions in Semantic analyser compatible with code generation of standard functions

Merge with changes from Mario

Fixing stupid bug (that was disabling code generation).

Adding Makefile for Darwin (thanks go to Manuele)

starting to add proper header file with declaration of standard functions

Fixing error messages for IL semantic errors (brocken in a previous changeset/commit).

Updating license info (with Edouard's permission for relevant files).

Updating License info (with Edoaurd's permission for relevant files).

Adding some debug info

Do not crash when checking semantics of undeclared symbolic_variable.
NOTE: this update may have broken the printing of error messages
during semantic analysis of IL code.

Updating licensing information.

Error messages (stage3) now better identify the location of the error.

Adding debug conditional printf()s in stage 3.
Printing semantic error info to stderr instead of stdout.

Merging my Huge change with Edouards/Laurents version

Huge change.

Changed packing declaration in iec_types

Modify code generated for avoiding warning while compiling when configuration or resource don't have any global variable

Initial TIME support in debugger

Merged with Edouard's modifications

Bug with getter for pointed variables in accessors fixed

Added dumb SEMA?implementation

Adding missing support for accessors and retain in configuration files (Bug and fix reported by Manuele Conti)

Merged with modifications from Edouard

Task single parameter code generation broken after addition of accessors fixed.

Bug when function call result is a parameter of another function call fixed.

A forgotten case in type size getter switch prevented debugging outputs.

merge

Adding support for generating code for variable in step action association instead of action

Updated makefiles for cygwin build with no perl

Bug with global located variables accessors fixed

Bug with code generation of global located variables in resource fixed thanks to Mario

Bugs fixed:
- S and R operators using C++ literals
- Function block output assignment code generation

Bug when parsing standard function block call in IL

Bug when trying to get type of elements in a big complex structure fixed

Adding support for using arrays in POU interface

Using InOut variables in functions fixed

Bug on generate_c_inlinefcall fixed
Adding support for using structures in POU interface

Using function_call_iterator in generate_c_inlinefcall instead of creating a new visitor

Bug on standard functions called with literals fixed
Checking that number of parameters in function call doesn't exceed the maximum

Adding support for making distinction between external variables and located variables for forcing

Adding support for forcing global without perturbation from setting external

Bug in located variable initialization code fixed

Bug on SFC debugging fixed
Adding support for forcing transition state

Adding support for setter and getter on complex datatype in IL

Changes merged

Adding support for setter and getter on complex datatype in ST

Fix accessor code

type definition to match accessor and new debug

fixed cygwin build - still slooooooooow

Adding Flags bit symbols

Adding support for flags on Function Block variables for marking which variable must be debugged, retained or is forced

Bug with ULINT correction fixed

Adding support for declare, init, get and set macros

added files to ignore in hgignore

Adding support for declare, init, get and set macros

Bug with using non explicit literals as standard library functions input parameters fixed

Wiped out references to Lolitech

Replace \"lolitech\" contact by \"edouard\" contact