RWGltf_GltfJsonParser::gltfParseSceneNode() - prevent flattering of Scene nodes
(allow flattering only of Mesh nodes).
Added command XAutoNaming managing XCAFDoc_ShapeTool::SetAutoNaming().
Added comparisons with reference Xdump data to glTF tests.
Added new class RWGltf_CafWriter for exporting XCAF document into glTF file
as well as Draw Harness command WriteGltf.
Added auxiliary method OSD_Path::FileNameAndExtension() splitting file name into Name and Extension.