to be generated by OBJ_CONSTRUCT. There are two good reasons:
- it is now independent of the underlying 'super' object (e.g. if
we later in the future decide to switch to a ompi_handle_t, it
is basically transparent now).
- we can use MPI_GROUP_NULL as the group of MPI_COMM_NULL
This commit was SVN r1257.
free the group. By default this is set to true, with special
code setting this to false for the groups associated with
COMM_NULL, COMM_SELF, and COMM_WORLD. Also, moved the reference
count decrement on the procs to the group destructor.
Reviewed by Ralph C.
This commit was SVN r1129.
