Implementation of the Message Passing Interface protocol by wrapping OpenMPI

OpenMPI is used only at linking and for it's mpi.h. Other implementations could be used without much modification.

Supports transfer of any valid Serializable instances as well as basic C arrays defined in module c. Using C arrays is encouraged when performance is critical.

Since this module is a thin wrapper around OpenMPI, in case of missing documentation, you can refer to https://www.open-mpi.org/doc/v1.8/.