- test for MeppQt4_temp (with timer 1000 ms)
- Remeshing_Smoothing is now an option with CMake

- disable clang compilation in Release mode (because of a problem with clang 3.2 under travis 12.04...)

- TEMPORARY: no more debug valgrind tests for OpenMesh_FactoryMain and RemeshingMeshMain (because of a CGAL library problem with Valgrind ???)