This commit enables the use of opal classes after a call to
opal_class_finalize. This is needed to support re-initializing opal
after calling opal_finalize_util (). This is needed to support the
following without leaking:
MPI_T_init_thread ();
MPI_T_finalize ();
MPI_Init ();
MPI_Finalize ();
Before this commit the above code would crash in MPI_Init because the
constructor array for some class was freed by opal_class_finalize ().
The fix is to turn the cls_initialized member of opal_class_t into an
init epoch identifier and compare it against opal_class_init_epoch
instead of 1. On each call to opal_class_finalize the
opal_class_init_epoch counter is incremented forcing re-initialization
of classes after finalize.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
db3a51f8c8