update QAT git repository to a working one.
Change QAT repository for b3c

the previous QAT repository was a clone of a refactor of QAT which was supposed to be QAT2. It seems that the version was not finished and we are reverting this change to use QAT1 from b3c.
Merge remote-tracking branch 'b3c/master'

Conflicts:
	qa/CMakeLists.txt
Update cmake files to do a minimal compilation (mafCore and mafEventbus).

Resolve #1
Merge pull request #11 from INSIGNEO/master

Minimal compilation