HIVE-6315 : MetaStoreDirectSql ctor should not throw (Sergey Shelukhin via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1565414 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6204 : The result of show grant / show role should be tabular format (Navis via Thejas Nair)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1565475 13f79535-47bb-0310-9956-ffa450edef68