Make coll basic's default priority be 10, not 0. This allows other

components to have a lower priority than the least common denominator.

This commit was SVN r2614.

src/mca/coll/basic/coll_basic.c

@@ -135,7 +135,7 @@ mca_coll_basic_comm_query(struct ompi_communicator_t *comm, int *priority)
 {
   /* This module should always have the lowest available priority */
 
-  *priority = 0;
+  *priority = 10;
 
   /* Choose whether to use [intra|inter], and [linear|log]-based
      algorithms. */