Fix conversion of binary digits to hex, when generating code.

Fix missing '(' when declaring new simple derived data type.

Ignore underscores in decimal integer constants when determining size in bits...

When checking semantics of expressions, skip semantic checking of data type definitions
(not yet supported). If we don't skip, all subsequent POUs would not be checked.

Fixing algorithm that determines bit size of constants containing underscores.

Merging with Edouard's version

Fixing bug related to setting array variables with values coming from other variables
(e.g. X[0] := Y;)

Added __IEC_OUTPUT_FLAG, to mark variable whose forcing implies refresh on eache cycle.

Fix bug when debugging located variables of type memory (%M) for all variable classes

Merging with Edouard's changes

Fixing code generation of array indexes in Function Blocks.

Commiting merge with Laurent's recent dead code removal change.

Adding fflush capabilities. It is sometimes usefull when debuging the compiler...

Adding missing semicolons.

fixed build error with gcc 4.5.2

Merged with Edouard's modifications

Fix bug when debugging located variables of type memory (%M)

Removed dead code

Fixing implementation of CU, CD, and CUD in standard library.

Deleting dead code.

Merging changes.

Added tracking of order by which tokens are processed by lexical analyser.
This helps in correctly formating error messages when constructs begin in one file, and end in another.

Adding tracking of filename in which token is located.

Reverted semantic error message so that Beremiz can parse them and that user can double-click on error message to open related POU and select the faulty line.