GitLab

Change the CMAKE (blas and fftw are on by default) and rename the build example variable (but let it to ON by default)

Factorize the basic cell POD (for block algorithms) and use it as symbolic part for all blocked cells

Add some text in the cmakelist in order to inform the user that turning sse-avx to on is mainly used in the P2P

Add new alignement memory class (to be able to allocate for any alignement which is a power of 2) and to allocate an array of Cpp objects