Fix a problem introduced by r15390 which was causing strange failures in numerous areas.

We no longer store whether we are a singleton in a MCA parameter, we now use a global constant. So all references to the MCA parameter must be removed.

This commit was SVN r15408.

The following SVN revision numbers were found above:
  r15390 --> open-mpi/ompi@bd65f8ba88

orte/mca/sds/base/sds_base_universe.c

@@ -194,7 +194,7 @@ CLEANUP:
 int
 orte_sds_base_seed_set_name(void)
 {
-    int id, flag, rc;
+    int rc;
     
     /* if we are a seed, then there can be only one proc */
     orte_process_info.num_procs = 1;
@@ -204,9 +204,7 @@ orte_sds_base_seed_set_name(void)
 
     /* if we're a seed and we're not infrastructure, we're also a
        singleton.  So set the singleton flag in that case */
-    id = mca_base_param_find("orte", NULL, "infrastructure");
-    mca_base_param_lookup_int(id, &flag);
-    if (!flag) {
+    if (!orte_infrastructure) {
         orte_process_info.singleton = true;
     }
     /* now need to create our name in a manner that puts our job info on the name service

orte/runtime/orte_setup_hnp.c

@@ -111,7 +111,7 @@ int orte_setup_hnp(char *target_cluster, char *headnode, char *username)
     char *keys[4], *tokens[3], *cellname;
     struct timeval tv;
     struct timespec ts;
-    bool infrastructure = true, *bptr, tf_flag;
+    bool *bptr, tf_flag;
 
     /* get the nodename for the headnode of the target cluster */
     if (NULL == headnode) {  /* not provided, so try to look it up */
@@ -486,13 +486,6 @@ MOVEON:
         OPAL_THREAD_UNLOCK(&orte_setup_hnp_mutex);
 
         if (ORTE_SUCCESS == orte_setup_hnp_rc) {
-            /* Remember if we were infrastructure or not */
-            id = mca_base_param_find("orte", NULL, "infrastructure");
-            mca_base_param_lookup_int(id, &intparam);
-            if ( ((int)true) != intparam) {
-                infrastructure = false;
-            }
-
             /* need to restart the local system so it can connect to the remote daemon. */
             if (ORTE_SUCCESS != (rc = orte_restart(orte_setup_hnp_cbdata.name, orte_setup_hnp_orted_uri))) {
                /** can't use ORTE_ERROR_LOG here as it may no longer be valid. Since we may