HBASE-10991 Port HBASE-10639 'Unload script displays wrong counts (off by one) when unloading regions' to 0.94 (Srikanth Srungarapu)



git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1587762 13f79535-47bb-0310-9956-ffa450edef68