move up to M5_34 as default releng tag
diff --git a/build/_common.php b/build/_common.php
index 9f64296..79b48a3 100644
--- a/build/_common.php
+++ b/build/_common.php
@@ -2,7 +2,7 @@
 require_once ("../../../includes/buildServer-common.php");
 
 $options = array (
-	"BaseBuilderBranch" => "M4_34",
+	"BaseBuilderBranch" => "M5_34",
 
 	"BranchAndJDK" => array (
 		"emf.torolab.ibm.com=------------,------------",