revisit method of JEM patch (replace instead of patch)
diff --git a/releng/maps/build.cfg b/releng/maps/build.cfg
index 1fe5d0b..a2c89da 100644
--- a/releng/maps/build.cfg
+++ b/releng/maps/build.cfg
@@ -1,4 +1,4 @@
-wtpBuilderVersion=v200612172252
+wtpBuilderVersion=v200612172258
 
 #v200612160355