[LANG-906] new type util features

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1510300 13f79535-47bb-0310-9956-ffa450edef68
[LANG-908] get method override hierarchy

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1510301 13f79535-47bb-0310-9956-ffa450edef68