don't require clean.lib for releases until we figure out what the deal is with mirrors.ibilio.org
don't require clean.lib for releases until we figure out what the deal is with mirrors.ibilio.org

git-svn-id: 08feff1e20460d5e8b75c2f5109ada1fb2e66d41@595128 13f79535-47bb-0310-9956-ffa450edef68

apache/velocity-tools,apache/velocity-tools