add missing download.cgi

git-svn-id: https://svn.apache.org/repos/asf/maven/ant-tasks/trunk@1596728 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/site/resources/download.cgi b/src/site/resources/download.cgi
new file mode 100644
index 0000000..495cde1
--- /dev/null
+++ b/src/site/resources/download.cgi
@@ -0,0 +1,4 @@
+#!/bin/sh
+# Just call the standard mirrors.cgi script. It will use download.html
+# as the input template.
+exec /www/www.apache.org/dyn/mirrors/mirrors.cgi $*
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