OAK-1098 : AuthorizableImpl methods should convert path to Oak path (WIP)

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1532842 13f79535-47bb-0310-9956-ffa450edef68
remove unused logger

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1532843 13f79535-47bb-0310-9956-ffa450edef68