use R1.0 builder
diff --git a/releng.maps/maps/build.cfg b/releng.maps/maps/build.cfg
new file mode 100644
index 0000000..5512e51
--- /dev/null
+++ b/releng.maps/maps/build.cfg
@@ -0,0 +1 @@
+dltkBuilderVersion=R1_0_maintenance