HIVE-5923 : SQL std auth - parser changes (Thejas Nair, reviewed by Brock Noland)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1555280 13f79535-47bb-0310-9956-ffa450edef68
HIVE-3936 - Remote debug failed with hadoop 0.23X, hadoop 2.X (Swarnim Kulkarni via Brock)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1555794 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6125: Tez: Refactoring changes (Gunther Hagleitner, reviewed by Thejas M Nair)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1556041 13f79535-47bb-0310-9956-ffa450edef68
Merge latest trunk into branch. (Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/tez@1556065 13f79535-47bb-0310-9956-ffa450edef68