MCHBUILD_ROOT as a cmake cache variable (#36)
MCHBUILD_ROOT as a cmake cache variable (#36)

* add mchbuild_root as a cache variable so that qt creator is not resetting it all the time

* fix kesch env

* fix

twicki/dawn,MeteoSwiss-APN/dawn,MeteoSwiss-APN/dawn,twicki/dawn,twicki/dawn,twicki/dawn,MeteoSwiss-APN/dawn