Procedure/Functions : new features part 2/2

[smedilol]

New features for functions and procedures:

• [ ] TCRFUN_TCFUNC_WHERE_COBOL85FUNC_ A custom function can be called as part of any statement where an COBOL 85 intrinsic function call would be acceptable.
• [ ] TCRFUN_OPTIONAL_FUNCTION the FUNCTION keyword is optional
• [ ] TCRFUN_FUNC_ALLOW_CALL Functions can also be called like a procedure.
• [ ] TCRFUN_FUNC_COMMA_SEPARATOR You need to separate parameters with a comma (,).

Check TODO in CobolNodeBuilder.EnterFunctionProcedureDivision