HIVE-7061 : sql std auth - insert queries without overwrite should not require delete privileges (Thejas Nair via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1597119 13f79535-47bb-0310-9956-ffa450edef68
HIVE-7108 : Cleanup HBaseStorageHandler (Swarnim Kulkarni via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1597120 13f79535-47bb-0310-9956-ffa450edef68
HIVE-7114 : Extra Tez session is started during HiveServer2 startup (Thejas Nair, reviewed by Vikram Dixit)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1597198 13f79535-47bb-0310-9956-ffa450edef68