draft easyconfig for GROMACS with goolfc v1.3.12
add CMake dep for GROMACS
remove GROMACS easyconfig with CUDA as a separate dependency, should use goolfc toolchain instead
move to GROMACS v4.6.1, include downloading and running of GROMACS regression tests
remove easyconfig for CMake with goolfc v1.4.10
explicitely disable CUDA support for GROMACS (build breaks with a GCC v4.7-based toolchain)
Merge pull request #12 from boegel/contrib_GROMACS

GROMACS tweaks