changing lam_mpi_comm_array to be pointer of pointers

This commit was SVN r685.

src/mpi/communicator/lam_comm_init.c

@@ -14,7 +14,7 @@
  * Global variables
  */
 
-lam_communicator_t *lam_mpi_comm_array;
+lam_communicator_t **lam_mpi_comm_array;
 size_t lam_mpi_comm_array_size;
 
 lam_communicator_t lam_mpi_comm_world;