OAK-2318: DocumentNodeStore.diffManyChildren() reads too many nodes

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1643767 13f79535-47bb-0310-9956-ffa450edef68
OAK-2322 Compaction estimation includes all data segments

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1643774 13f79535-47bb-0310-9956-ffa450edef68
OAK-2044: DocumentSplit should allow properties added by persistence

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1643789 13f79535-47bb-0310-9956-ffa450edef68