/*D
   MPI_Add_error_class - Add an MPI error class to the known classes

Synopsis:
.vb
int MPI_Add_error_class(int *errorclass)
.ve

Output Parameters:
. errorclass - value for the new error class (integer)

.N ThreadSafe

.N Fortran

.N Errors
.N MPI_SUCCESS
.N MPI_ERR_ARG
.N MPI_ERR_OTHER

D*/

