Fix type mismatch compiler error when gfortran 10 is used without '-fallow-argument-mismatch' flag

[DusanJovic-NOAA]

Starting with version 10 gfortran treats mismatches between actual and dummy argument lists as errors. This error can be turned into warning (and silenced) by using '-fallow-argument-mismatch' flag.

Most of the errors can be resolved by using mpi_f08 module which provides generic interfaces.