set MPICH_CC in module if required
actually add extra module entries
also set CC, clarify with comment
add debug info
adjust use of load_fake_module and clean_up_fake_module
fix use of load_fake_module and clean_up_fake_module
Merge pull request #98 from boegel/NEURON

set compiler env vars in NEURON module, update use of load_fake_module
Merge pull request #6 from hpcugent/v1.1.x

V1.1.x