drd: Add __cxa_guard_*() intercepts

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14012 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/drd/drd_clientreq.h b/drd/drd_clientreq.h
index c5d0623..929b60d 100644
--- a/drd/drd_clientreq.h
+++ b/drd/drd_clientreq.h
@@ -240,6 +240,7 @@
    mutex_type_errorcheck_mutex = 2,
    mutex_type_default_mutex    = 3,
    mutex_type_spinlock         = 4,
+   mutex_type_cxa_guard        = 5,
 } MutexT;
 
 /**