Merge pull request #40 from mtola/master

add MeppQt4_temp (empty optional GUI application with QT4, OpenGL and libQGLViewer) in Visualization
Add Laplacian smoothing for CGAL and OpenMesh data structures.
Some improvements in LaplacianSmoothingMeshFilter.h and LaplacianSmoothingMeshFilter.cxx : put generic smoothing algorithm into a class called VertexRepositioning ; improvement of types exportation ; start some noise addition too. Need Ricardo review.
Small changes.
improve compilation with clang
fix pragma under windows
- 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 ???)
travis test
update travis script
travis update
update travis script
update travis script
add empty skeleton for MeppQt4Visualization and MeppQt4Controller
add MeppQt4Visualization and MeppQt4Controller
set CMake Policy CMP0017
MeppQt4Visualization is now derived from QMainWindow and Mepp::BaseGraphicUserInterface<MeppQt4Visualization>
Todo: give the events to MeppQt4Controller

Add MeppQt4 test
fix MeppQt4 test
fix MeppQt4 test
fix ressources for MeppQt4 under Windows
fix icons for MeppQt4 under Windows and Mac OS X