HBASE-9432 Backport HBASE-8781 to 0.94 (Anoop)

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1520143 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9429 Add back MetaScanner.allTableRegions(Configuration conf,byte[] tablename,boolean offlined) method

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1520155 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/0.94' into 0.94-gd
Merge remote branch 'origin/0.94-gd' into fb-HBASE-8553-0.94-gd