OAK-1893 - MBean to dump Lucene Index content and related stats
OAK-1906 - Adding information to a Standard MBean interface using annotations

Merging 1605030,1605036,1602853,1605038,1605831,1605852. OAK-1906 required as OAK-1893 depends on that


git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/branches/1.0@1621063 13f79535-47bb-0310-9956-ffa450edef68