HIVE-3840 : hive cli null representation in output is inconsistent (Thejas Nair via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1465261 13f79535-47bb-0310-9956-ffa450edef68
HIVE-3985 : Update new UDAFs introduced for Windowing to work with new Decimal Type (Brock Noland via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1465263 13f79535-47bb-0310-9956-ffa450edef68