Closes trac:2433. Check for hetero architecture and disqualify sm connections if that is found as the sm btl currently doesn't support hetero operations.

cmr=v1.7.4:reviewer=brbarret:subject=Disqualify sm btl for hetero procs

This commit was SVN r29882.

The following Trac tickets were found above:
  Ticket 2433 --> https://svn.open-mpi.org/trac/ompi/ticket/2433

ompi/mca/btl/sm/btl_sm.c

@@ -15,6 +15,7 @@
  *                         All rights reserved. 
  * Copyright (c) 2010-2012 IBM Corporation.  All rights reserved.
  * Copyright (c) 2012      Oracle and/or its affiliates.  All rights reserved.
+ * Copyright (c) 2013      Intel, Inc. All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -505,6 +506,11 @@ int mca_btl_sm_add_procs(
             continue;
         }
 
+         /* sm doesn't support heterogeneous yet... */
+        if (procs[proc]->proc_arch != my_proc->proc_arch) {
+            continue;
+        }
+
         /* we have someone to talk to */
         have_connected_peer = true;