OS-4300 increase RT signal count
Reviewed by: Robert Mustacchi <rm@joyent.com>

@@ -20,10 +20,11 @@
  */
 
 /*
  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
+ * Copyright 2015, Joyent, Inc.
  */
 
 /*      Copyright (c) 1988 AT&T */
 /*        All Rights Reserved   */
 

@@ -186,10 +187,11 @@
         0,              0,
         0,              0,
         0,              0,
         0,              0,
         0,              0,                      /* SIGRTMIN+15 */
+        0,              0,                      /* SIGRTMIN+16 */
         0,              0,                      /* SIGRTMAX-15 */
         0,              0,
         0,              0,
         0,              0,
         0,              0,