Update the TCP BTL MCA param btl_tcp_if_exclude default value to use

CIDR notation 127.0.0.1/8 to ignore localhost devices instead of the
imprecise (and not always correct!) "lo,sppp".

This commit was SVN r26788.

ompi/mca/btl/tcp/btl_tcp_component.c

@@ -9,7 +9,7 @@
  *                         University of Stuttgart.  All rights reserved.
  * Copyright (c) 2004-2005 The Regents of the University of California.
  *                         All rights reserved.
- * Copyright (c) 2007-2011 Cisco Systems, Inc.  All rights reserved.
+ * Copyright (c) 2007-2012 Cisco Systems, Inc.  All rights reserved.
  * Copyright (c) 2008      Sun Microsystems, Inc.  All rights reserved.
  * Copyright (c) 2009      Oak Ridge National Laboratory
  * Copyright (c) 2012      Los Alamos National Security, LLC.  All rights
@@ -191,7 +191,7 @@ static int mca_btl_tcp_component_register(void)
     mca_btl_tcp_component.tcp_if_include =
         mca_btl_tcp_param_register_string("if_include", "Comma-delimited list of devices and/or CIDR notation of networks to use for MPI communication (e.g., \"eth0,192.168.0.0/16\").  Mutually exclusive with btl_tcp_if_exclude.", "");
     mca_btl_tcp_component.tcp_if_exclude =
-        mca_btl_tcp_param_register_string("if_exclude", "Comma-delimited list of devices and/or CIDR notation of networks to NOT use for MPI communication -- all devices not matching these specifications will be used (e.g., \"eth0,192.168.0.0/16\").  If set to a non-default value, it is mutually exclusive with btl_tcp_if_include.", "lo,sppp");
+        mca_btl_tcp_param_register_string("if_exclude", "Comma-delimited list of devices and/or CIDR notation of networks to NOT use for MPI communication -- all devices not matching these specifications will be used (e.g., \"eth0,192.168.0.0/16\").  If set to a non-default value, it is mutually exclusive with btl_tcp_if_include.", "127.0.0.1/8");
 
     mca_btl_tcp_component.tcp_free_list_num =
         mca_btl_tcp_param_register_int ("free_list_num", NULL, 8);