Merge branch 'feature/remove-MPI-deprecation-warnings' into 'master'

Feature/remove mpi deprecation warnings

Suppress some warnings due to deprecated methods in MPI. 

There are some warnings left due to MPI_LB and MPI_UB but I am not sure how to fix them. See http://www.mpi-forum.org/docs/mpi-2.2/mpi22-report/node76.htm.

See flyspray/FS#1610

See merge request !14