[freefem++/f16] (6 commits) ...move MPI plugins to mpi subpackage

[Dominik Mierzejewski]

Summary of changes:

  3d6ad7c... - Rebuilt for https://fedoraproject.org/wiki/Fedora_17_Mass (*)
  7cfe4dc... - Rebuilt for c++ ABI breakage (*)
  3d45d57... update to 3.19-1 (*)
  1603557... add forgotten source tarball (*)
  2d970f0... restore accidentally deleted source line (*)
  88afc84... move MPI plugins to mpi subpackage (*)

(*) This commit already existed in another branch; no separate mail sent