HIVE-5663 : Refactor ORC RecordReader to operate on direct & wrapped ByteBuffers (Gopal V via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1543947 13f79535-47bb-0310-9956-ffa450edef68
HIVE-5635 : WebHCatJTShim23 ignores security/user context (Eugene Koifman via Thejas Nair)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1543983 13f79535-47bb-0310-9956-ffa450edef68
HIVE-5845 : CTAS failed on vectorized code path (Remus Rusanu via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1544002 13f79535-47bb-0310-9956-ffa450edef68
HIVE-5692 : Make VectorGroupByOperator parameters configurable (Remus Rusanu via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1544017 13f79535-47bb-0310-9956-ffa450edef68