general build cleanup
diff --git a/releng.control/ant.bat b/releng.control/ant.bat
new file mode 100644
index 0000000..f16221f
--- /dev/null
+++ b/releng.control/ant.bat
@@ -0,0 +1,5 @@
+@echo off
+setlocal
+set PROJECT_HOME=%~dp0
+call %ANT_HOME%\bin\ant.bat %*
+endlocal