HIVE-4035 : Column Pruner for PTF Op (Prajakta Kalmegh via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/ptf-windowing@1449363 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4036 : remove use of FunctionRegistry during PTF Op initialization (Harish Butani via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/ptf-windowing@1449368 13f79535-47bb-0310-9956-ffa450edef68
merge with hive