HBASE-10321 CellCodec has broken the 96 client to 98 server compatibility

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1557781 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10326 Super user should be able scan all the cells irrespective of the visibility labels(Ram)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1557792 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10329 Fail the writes rather than proceeding silently to prevent data loss when AsyncSyncer encounters null writer and its writes aren't synced by other Asyncer



git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1557839 13f79535-47bb-0310-9956-ffa450edef68