Remove ViewerTest_Tool, keep only one unified way to create viewer using ViewerTest - ViewerTest::ViewerInit().
Remove test case bugs/vis/buc60851 and command BUC60851.
Added test case bugs/xde/bug24430
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.