Don't throw an exception on an error decoding a secret key

git-svn-id: https://svn.apache.org/repos/asf/webservices/wss4j/trunk@1489830 13f79535-47bb-0310-9956-ffa450edef68
Adding missing dependency + fixing SAML Subject Confirmation method handling

git-svn-id: https://svn.apache.org/repos/asf/webservices/wss4j/trunk@1489831 13f79535-47bb-0310-9956-ffa450edef68