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
OAK-2048 - fixed spatial4j version in oak-solr-osgi, merged to branch 1.0

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/branches/1.0@1619697 13f79535-47bb-0310-9956-ffa450edef68
OAK-2039 SegmentNodeStore might not create a checkpoint
 - merged rev 1619815



git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/branches/1.0@1619819 13f79535-47bb-0310-9956-ffa450edef68
OAK-2040 Tar compaction: log a warning if there is more than one checkpoint
 - merged rev 1619823, 1619824



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