HBASE-8969 Backport HBASE-8535+HBASE-8586 TestHCM#testDeleteForZKConnLeak enhancement to 0.94

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1504215 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8971: Bump 0.94 version to 0.94.10-SNAPSHOT

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1504233 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8779 Add mutateRow method support to Thrift2 (Hamed Madani)

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1504255 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8945 Backport to 0.94: HBASE-7952 Remove update() and Improve ExplicitColumnTracker performance. (orginal path by Raymond Liu)

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1504313 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8968  Avoid call to zk in HRegionServer#getMaster() to log the master address which already read from the zk. (rajeshbabu)

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1504335 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8967 Duplicate call to snapshotManager.stop() in HRegionServer (Jerry He)

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