The algorithm BRepExtrema_DistShapeShape has been protected against exceptions when non-geometric shape data is given on input, like a face containing triangulation only or an edge containing polygon only. Such faces/edges are ignored by the algorithm.
BRepGProps::VolumeProperties() now ignores faces without geometric surface to avoid access violation.
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.
