HIVE-5760 : Add vectorized support for CHAR/VARCHAR data types (Matt McCline via Jason Dere)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1622729 13f79535-47bb-0310-9956-ffa450edef68
HIVE-7889 : txnMgr should be session specific (Alan Gates via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1622731 13f79535-47bb-0310-9956-ffa450edef68