Added another missing dependency, fixed fftw optional modules, added fftw quadmaths support with gcc.

Fix du cmake pour la génération de HySoP/hysop/f2hysop.pyf, ajout de FindSWIG.cmake pour corriger le bug de version trouvée.

- fix bug poisson
- comment googletests (temp)
- comment fftw extra libs (fftwq ..., temp)

Fix penalisation/subsets (partially)
Update doc (sphinx)
Almost all tests ok except:
	 22 - mpi_test_advec_scales (Failed)
	 77 - test_advection_nullVelocity (Failed)
	 79 - test_advection_randomVelocity (Failed)

update, reorg and comments to prepare a pack to  send cmake files to ppm-team+ some stuff (draft) about ppm-client (vortex, Plouhmans)