OAK-458: Define upgrade from Jackrabbit2.x to Jackrabbit OAK

Include property index updates in the upgrade.
Optimize the hook organization to avoid extra tree traversals

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1548089 13f79535-47bb-0310-9956-ffa450edef68