- 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

don't force calibration in simulation mode. It does not make sense, and hides the StarPU detailed warning about missing calibration

to change the default values for tag_width(=31) and tag_sep(=24).
Today, it serves only with starPU.