HBASE-9865 Reused WALEdits in replication may cause RegionServers to go OOM

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1541265 13f79535-47bb-0310-9956-ffa450edef68
HBASE-4654 [replication] Add a check to make sure we don't replicate to ourselves (Demai)



git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1541279 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-YAHOO-666-trunk-gd