HBASE-9047 Tool to handle finishing replication when the cluster is offline (Demai Ni)

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.96@1551462 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9047 - addendum, include new files

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.96@1551463 13f79535-47bb-0310-9956-ffa450edef68