Delete declaration of unused & undeclared functions.

Delete class elements that are not used (clean up code).

Add check whether external var matches to global var.

Also check FB passed as parameters in FB/Function calls (Thanks Andreas!)

Minor changes needed to build with pedantic flag.

Also check external/global variable consistency in configurations and FBs.

add method for printing class_name. USE ONLY FOR DEBUGING!

store POU reference to POU declaration instead of global var declarations.

Start declaration check class.

Start declaration check class.

Adjust coding style.

list_c: initial capacity. ERROR_MSG(msg,...) supports optional arguments now.

Deleting datatype checks no longer needed (with a view of making search_expression_type_c redundant).

Start adding support for data type checking of enums.

Remove comment no longer valid since introduction of constant folding.

Add some comments.

Update configure script.

More precise handling of const value status.

Fix bug in checking array ranges.

Add more info to error messages.

Allow the use of PRId64, PRIu64 and PRIx64 printf formating macros globally.

Merge.

Fix constant folding: now handles INT_MIN and neg_integer_c correctly.

Replace test bison version without bash regular expression.
Tested on OS X 10.8 - Linux Ubuntu 12.4 - MinGW.

Fix Segmentation Fault FB var declaration in a single list.

Add some comments.

Fix some warning about loss of precision data in iec_std_lib.h file.

Fix bug with NE function for STRING variables

Fix bug in code for pragma with double brackets

Merged

Adding support for direct array declaration in structure element declaration

Added double curly braces for pragma (kept single curly braces for compatibility). Added macro def and undef surrounding pragma to simplify user code. Moved useless comment from generated code back to code generator.