HIVE-6612 : Misspelling schemaTool completeted (Szehon Ho via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1579268 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6658 : Modify Alter_numbuckets* test to reflect hadoop2 changes(Laljo John Pullokkaran via Jason Dere)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1579272 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6690 : NPE in tez session state (Sergey Shelukhin, reviewed by Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1579293 13f79535-47bb-0310-9956-ffa450edef68