HIVE-6743: Allow specifying the log level for Tez tasks (Siddarth Seth via Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/branch-0.13@1584792 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6827 : Disable insecure commands with std sql auth (Ashutosh Chauhan via Thejas Nair)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/branch-0.13@1584934 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6829 : alter table foo compact gives an error (Alan Gates via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/branch-0.13@1584983 13f79535-47bb-0310-9956-ffa450edef68