Add CHAMELEON_SIMULATION_MAGMA option to select whether to enable magma kernels or not in simulation mode

trailing whitespaces

add MORSE_Pause/Resume function to avoid CPU consumption when no tasks have to be executed - call starpu_pause/resume, do nothing for quark (no need)

change installation directories for headers, executables and docs. Make it relative to chameleon to avoid a bloody mess in system dirs

change copyright - correct whitespace - place cmake module depending on chameleon in cmake_modules and no more in cmake_modules/morse