+ - Add support for MPI_Irsend, MPI_Rsend, MPI_Rsend_init
+ - SMPI can now be selected by cmake's find_module(MPI) with
+ MPI_C_COMPILER, MPI_CXX_COMPILER, MPI_Fortran_COMPILER variables.
+ - Add support for MPI Errhandlers in Comm, File or Win. Default one is still set to MPI_ERRORS_RETURN.