HBASE-7698 race between RS shutdown thread and openregionhandler causes region to get stuck (Ram)



git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1443638 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7785 rolling-restart.sh script unable to check expiration of master znode (Samir Ahmic)

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1443660 13f79535-47bb-0310-9956-ffa450edef68