Links to both openmpi and mpich

[yurivict]

I tried to create the FreeBSD port, but it links to both openmpi and mpich, which is definitely a mistake.

====> Running Q/A tests (stage-qa)
Warning: 'lib/python3.6/site-packages/pyranda/parcop/parcop.so' is not stripped consider trying INSTALL_TARGET=install-strip or using ${STRIP_CMD}
Error: /usr/local/lib/python3.6/site-packages/pyranda/parcop/parcop.so is linked to /usr/local/mpi/openmpi/lib/libmpi_usempi.so.5 from net/openmpi but it is not declared as a dependency
Error: /usr/local/lib/python3.6/site-packages/pyranda/parcop/parcop.so is linked to /usr/local/mpi/openmpi/lib/libmpi_mpifh.so.12 from net/openmpi but it is not declared as a dependency
Error: /usr/local/lib/python3.6/site-packages/pyranda/parcop/parcop.so is linked to /usr/local/lib/libmpi.so.12 from net/mpich but it is not declared as a dependency

It also doesn't strip binaries.

rev. d39605f