process groups sometimes fail for MPI-PT port

[jeffdaily]

In pgtest.x we see

> Checking accumulate ... 

  disjoint ga_acc is OK


  overlapping ga_acc is OK


> Checking add ...
[3] ../../comex/src-mpi-pt/comex.c:2387: _put_packed_handler: Assertion `reg_entry' failed[3] Received an Error in Communication: (-1) comex_assert_fail
application called MPI_Abort(comm=0x84000002, -1) - process 3

In ghosts.x we see

 using                     2  process(es)
 Value of pdims(                    1 ) is                     2
 Value of pdims(                    2 ) is                     1
map( 1) =     1
map( 2) =  1001
map( 3) =     1
 *
 * Global array creation was successful
 *
[3] ../../comex/src-mpi-pt/comex.c:2542: _get_packed_handler: Assertion `reg_entry' failed[3] Received an Error in Communication: (-1) comex_assert_fail
application called MPI_Abort(comm=0x84000002, -1) - process 3