Merged requested to merge mpi_scheme_by_environment into NIFTy_5
Until now, the MPI parallelization scheme used in a NIFTy installation is hard coded at installation time. With this patch, the MPI parallelization scheme can be set via the environment variable
NIFTy_MPI_SCHEME at runtime.
Possible values are
If the environment variable is not set, the
"Standard" scheme is chosen.