Some warnings were removed from MFC samples
All warnings of sample projects with warning level 4 were fixed on VC9
Warnings level increased to -W4 in projects of MFC samples; sample ReadMe files added to documentation
Changes in Viewer2dDoc.cpp and OcafDoc.cpp were restored.
Minor corrections in documentation
void FreeTexture() in OpenGl_TextureBox.cxx - avoid possible NULL-pointer dereference
after debug x64 compilation the executable viewer3d had been moved to the bin folder. now executable viewer3d located in bind folder.