formatting

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1478388 13f79535-47bb-0310-9956-ffa450edef68
OAK-51 : Access Control Management (backwards compatible handling of "unknown" principals)

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1478389 13f79535-47bb-0310-9956-ffa450edef68