HIVE-6796 : Create/drop roles is case-sensitive whereas set role is case insensitive (Ashutosh Chauhan via Thejas Nair)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1584396 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/trunk@1584403 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6749 : Turn hive.auto.convert.join.use.nonstaged off by default (Ashutosh Chauhan via Navis)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1584410 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6823 : sql std auth - database authorization does not check for role ownership (Thejas Nair, reviewed by Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1584425 13f79535-47bb-0310-9956-ffa450edef68