Some warning cleanups

git-svn-id: https://svn.apache.org/repos/asf/webservices/wss4j/trunk@1487669 13f79535-47bb-0310-9956-ffa450edef68
Cleanup use of generics in  ws-security-policy-stax

git-svn-id: https://svn.apache.org/repos/asf/webservices/wss4j/trunk@1487670 13f79535-47bb-0310-9956-ffa450edef68
Remainder of eclipse warnings

git-svn-id: https://svn.apache.org/repos/asf/webservices/wss4j/trunk@1487671 13f79535-47bb-0310-9956-ffa450edef68