hmaarrfk/fftw2-mpi

Adding mpi support to the FFTW2 libraries

We shouldn't need this soon: https://bugzilla.redhat.com/show_bug.cgi?id=1204413


This is a companion discussion topic for the original entry at https://copr.fedorainfracloud.org/coprs/hmaarrfk/fftw2-mpi/