HIVE-4609 : Allow hive tests to specify an alternative to /tmp (Brock Noland via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1494860 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4761 : ZooKeeperHiveLockManage.unlockPrimitive has race condition with threads (Brock Noland via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1495055 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4172 : JDBC2 does not support VOID type (Navis via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1495273 13f79535-47bb-0310-9956-ffa450edef68