Add vc12 project files for MFC samples.
CMake - add Unicode option for MFC samples
CMake - do not set MFC option globally
Update description of Cmake building procedure for MFC sample
Correction of cmake.md and automake.md
0024943: Port MFC sample to UNICODE for compatibility with VS2013
The formatting of developer guides about OCCT building with various build systems has been improved.
automake article clean up
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