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.
Modified DRAW command "2dintersect" added optional parameter "tolerance for intersection".
Test case for bug 0023587 : Check intersections of four 2d curves
Adding test cases for this fix
Deleting temporary test case