- create config files to store definitions
 - include/chameleon_config.h: definitions exposed to the public (installed file)
 - control/config.h: additional definitions used internally
- modify source code to call the config files when it is necessary (when the different "if defined" are used)

    - use (starpu_cpu_func_t) 1 trick, same as cuda_func
    - cpu funtions are not defined anymore avoiding the dependency to coreblas
    - add #if !defined(CHAMELEON_SIMULATION) where it is needed
    - remove dependency to the coreblas library (become useless)
    - remove useless simucblas, simulapacke libraries
    - remove CHAMELEON_SIMULATION_MAGMA cmake variable and definition
      - keep using CHAMELEON_USE_CUDA and CHAMELEON_USE_MAGMA to consider CUDA kernels
      - this avoid to introduce useless new variables
    - work on messages

fix use of cuda+magma in simulation mode: size of workspace must be consistent between real and simu modes

With previous syntax, CMAKE_INSTALL_RPATH contains empty spaces and
rpath doesn't work at execution (libchameleon.so not found).

chameleon: cblas/lapacke headers should not be duplicated, factorize error message if cblas/lapacke function are called in simu mode

update the INSTALL_RPATH at the beginning instead of setting a new one, allows to give additional paths by hand

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

give the full path to smpicc - refix the problem of starpu mpi function detection - with the complete path of mpi libraries the test fails... with -L/... and -l it succeeds

refix the problem of starpu mpi function detection - with the complete path of mpi libraries the test fails... with -L/... and -l it succeeds