Ensure we don't silently fail when unable to make a connection - bark pleasantly first.

Refs trac:4571

This commit was SVN r31537.

The following Trac tickets were found above:
  Ticket 4571 --> https://svn.open-mpi.org/trac/ompi/ticket/4571

orte/mca/oob/tcp/help-oob-tcp.txt

@@ -10,6 +10,7 @@
 #                         University of Stuttgart.  All rights reserved.
 # Copyright (c) 2004-2005 The Regents of the University of California.
 #                         All rights reserved.
+# Copyright (c) 2014      Intel, Inc. All rights reserved.
 # $COPYRIGHT$
 # 
 # Additional copyrights may follow
@@ -68,6 +69,7 @@ value will be ignored.
 One or more TCP routes were given to a process, but no
 communication path could be found:
 
+  Node:   %s
   Source: %s
   Peer:   %s
 

orte/mca/oob/tcp/oob_tcp_component.c

@@ -1487,6 +1487,15 @@ void mca_oob_tcp_component_failed_to_connect(int fd, short args, void *cbdata)
                         ORTE_NAME_PRINT(ORTE_PROC_MY_NAME),
                         ORTE_NAME_PRINT(&pop->peer));
 
+    /* eventually, we should allow other OOB components a chance to connect
+     * to the target process. However, for now, we need to ensure we don't
+     * have a silent failure - so emit a "couldn't connect" message
+     */
+    orte_show_help("help-oob-tcp.txt", "unable-to-communicate", true,
+                   orte_process_info.nodename,
+                   ORTE_NAME_PRINT(ORTE_PROC_MY_NAME),
+                   ORTE_NAME_PRINT(&pop->peer));
+
  cleanup:
     /* if this was a lifeline, then alert */
     if (ORTE_SUCCESS != orte_routed.route_lost(&pop->peer)) {