HIVE-4617: Asynchronous execution in HiveServer2 to run a query in non-blocking mode (Jaideep Dhok & Vaibhav Gumashta via Thejas Nair)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1521326 13f79535-47bb-0310-9956-ffa450edef68
HIVE-5112 : Upgrade protobuf to 2.5 from 2.4 (Owen O'malley and Brock Noland via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1521520 13f79535-47bb-0310-9956-ffa450edef68
HIVE-5249 : Missing test file for HIVE5199 (Navis via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1521523 13f79535-47bb-0310-9956-ffa450edef68