HIVE-6325: Enable using multiple concurrent sessions in tez (Vikram Dixit, reviewed by Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/branch-0.13@1574640 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6548 : Missing owner name and type fields in schema script for DBS table (Ashutosh Chauhan via Thejas Nair)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/branch-0.13@1574643 13f79535-47bb-0310-9956-ffa450edef68