Per suggestion from Paul Kapinos, report in BTL verbosity if a device

is skipped because it is too far away.

(see thread starting here:
http://www.open-mpi.org/community/lists/devel/2013/06/12470.php)

This commit was SVN r29790.

ompi/mca/btl/openib/btl_openib_component.c

@@ -2758,6 +2758,8 @@ btl_openib_component_init(int *num_btl_modules,
                 mca_btl_openib_component.ib_max_btls); i++) {
         if (0 != mca_btl_openib_component.ib_num_btls &&
             distance != dev_sorted[i].distance) {
+            BTL_VERBOSE(("openib: skipping device %s; it's too far away", 
+                         ibv_get_device_name(dev_sorted[i].ib_dev)));
             break;
         }