HIVE-3107 : Improve semantic analyzer to better handle column name references in group by/sort by clauses (Harish Butani via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1543509 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4632 : Use hadoop counter as a stat publisher (Navis via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1543549 13f79535-47bb-0310-9956-ffa450edef68