FIX: RunSofa app icon using cmake

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@9648 b7f1a160-662a-0410-a6d8-bea165342f16
ADD: CMake - Windows only : boost DLLs are automatically copied if boost is needed

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@9649 b7f1a160-662a-0410-a6d8-bea165342f16
ADD: cmake AddSourceDependencies function to add non-linker dependencies (e.g. eigen2_solver has a source dependency to the eigen external which has no binary, only sources)
ADD: cmake eigen2_solver has now a source dependency with the external eigen

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@9650 b7f1a160-662a-0410-a6d8-bea165342f16
vtk export: overwrite files + check extension vtu

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@9651 b7f1a160-662a-0410-a6d8-bea165342f16