License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast
Wrong license statements corrected in several files.
Copyright and license statements added in XSD and GLSL files.
Copyright year updated in some files.
Obsolete documentation files removed from DrawResources.
Modification to avoid creation of redundant labels in XCAF for any shapes belonging compound even if colors are not defined for them.
Fix to avoid compiler warning.
Fix for regression for test case de iges_2 A6
Test case for issue CR23921
