CMake: fixed looking for freeglut on linux (I also changed it for windows guessing it would have the same pb but it needs to be checked)

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@9539 b7f1a160-662a-0410-a6d8-bea165342f16
Fixed ComplianceSolver: now able to handle non-diagonal M matrices. Working on unit tests.


git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@9540 b7f1a160-662a-0410-a6d8-bea165342f16