fixing build + cleaning up little details about jmx

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/jcs/trunk@1594030 13f79535-47bb-0310-9956-ffa450edef68
cleanup of some no more needed methods since we rely on jcs core + caching hashcode of jcache key wrappers

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/jcs/trunk@1594032 13f79535-47bb-0310-9956-ffa450edef68