HIVE-5998 Add vectorized reader for Parquet files reviewed by Brock

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1585290 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6848 importing into an existing table fails (Harish Butani via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1585325 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6834 Dynamic partition optimization bails out after removing file sink operator (Prasanth J via Harish Butani)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1585330 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6840: Use Unordered Output for Bucket Map Joins on Tez (Siddharth Seth via Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1585358 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6331: HIVE-5279 deprecated UDAF class without explanation/documentation/alternative (Lars via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1585360 13f79535-47bb-0310-9956-ffa450edef68