HIVE-4846 : Implement Vectorized Limit Operator (Jitendra Nath Pandey via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1531033 13f79535-47bb-0310-9956-ffa450edef68
HIVE-5490 : SUBSTR(col, 1, 0) returns wrong result in vectorized mode (Teddy Choi via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1531035 13f79535-47bb-0310-9956-ffa450edef68
HIVE-5445 - PTest2 should use testonly target

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1531049 13f79535-47bb-0310-9956-ffa450edef68