OAK-51 : Access Control Management (wip, fix descriptor value for ac support)

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1455446 13f79535-47bb-0310-9956-ffa450edef68
fix javadoc

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1455447 13f79535-47bb-0310-9956-ffa450edef68