OAK-2035 OrderedIndex fails to keep a correct skipList on TarMK

Merged r1618624 in 1.0



git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/branches/1.0@1619396 13f79535-47bb-0310-9956-ffa450edef68
OAK-2042 TarMK CompactionMap should include more nodes
 - merged rev 1619222



git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/branches/1.0@1619406 13f79535-47bb-0310-9956-ffa450edef68