support for read/write-lock and read/write-trylock

Change-Id: I609071c0f6234d0d413c8b312d8a8379abf6846e
Refs: #1323

test/issues/1323/rwlock.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+USELTP=0
+USEOSTEST=0
+BOOTPARAM="-c 2-7,9-15 -m 1G@0"
+
+. ../../common.sh
+
+################################################################################
+$MCEXEC ./rwlock 1 10
+$MCEXEC ./rwlock 2 10
+$MCEXEC ./rwlock 3 10
+$MCEXEC ./rwlock 4 10