* New: In bootsrap/docker:
    * install python3/nMigen tool in all environment.
    * Add a new image on top of the coriolis one to have a shell
      (with X11 connexion to the host system).
    * Upgrade Yosys to 0.9.
    * Correct integration of allianceInstaller.sh in socInstaller.py.
    * Add a chroot mode to socInstaler.py (for Debian 9 chrooted).
    * Allow benchs to be run separately.