Let clirr always compare to the latest release; use version from commons parent

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/validator/trunk@1637660 13f79535-47bb-0310-9956-ffa450edef68
Update plugins or use version inherited from commons parent

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/validator/trunk@1637661 13f79535-47bb-0310-9956-ffa450edef68