HIVE-5830 : SubQuery: Not In subqueries should check if subquery contains nulls in matching column (Harish Butani via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1549641 13f79535-47bb-0310-9956-ffa450edef68
HIVE-5978 : Rollups not supported in vector mode. (Jitendra Nath Pandey via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1549642 13f79535-47bb-0310-9956-ffa450edef68
HIVE-5872: Make UDAFs such as GenericUDAFSum report accurate precision/scale for decimal types (reviewed by Sergey Shelukhin)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1549679 13f79535-47bb-0310-9956-ffa450edef68