HIVE-4298: add tests for distincts for hive.map.groutp.sorted. (Namit via Gang Tim Liu)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1465167 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4292 : hiveserver2 should support -hiveconf commandline parameter (Thejas Nair via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1465169 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4262 : fix last_value UDAF behavior (Harish Butani via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1465172 13f79535-47bb-0310-9956-ffa450edef68