drd: Rename DRD_STOP_TRACE_VAR() into DRD_STOP_TRACING_VAR()

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12348 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/drd/drd.h b/drd/drd.h
index a497ebf..e5fc031 100644
--- a/drd/drd.h
+++ b/drd/drd.h
@@ -95,7 +95,7 @@
 /**
  * Tell DRD to stop tracing memory accesses for the specified variable.
  */
-#define DRD_STOP_TRACE_VAR(x)                                       \
+#define DRD_STOP_TRACING_VAR(x)                                       \
    VALGRIND_DO_CLIENT_REQUEST_STMT(VG_USERREQ__DRD_STOP_TRACE_ADDR, \
                                    &(x), sizeof(x), 0, 0, 0)