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
Some corrections; test cases were added; coding standards in MFC samples & presentations
Request stencil buffer for Linux.
correct test cases; correct compilation errors
compilation warnings (gcc/Linux)