Branch for feature development of ptf and windowing functions.

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/ptf-windowing@1441969 13f79535-47bb-0310-9956-ffa450edef68
Initial commit of ptf-windowing functionality. (Harish Bhutani and Prajkta Kalmegh via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/ptf-windowing@1441972 13f79535-47bb-0310-9956-ffa450edef68
HIVE-3981 : Split up tests in ptf_general_queries.q (Ashutosh Chauhan. Reviewed by Harish Bhutani)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/ptf-windowing@1442447 13f79535-47bb-0310-9956-ffa450edef68
HIVE-3982 : Merge PTFDesc and PTFDef classes (Ashutosh Chauhan. Reviewed by Harish Bhutani)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/ptf-windowing@1442467 13f79535-47bb-0310-9956-ffa450edef68
HIVE-2839 Filters on outer join with mapjoin hint is not applied correctly
(Navis via namit)



git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1443065 13f79535-47bb-0310-9956-ffa450edef68
Merging with latest trunk

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/ptf-windowing@1443239 13f79535-47bb-0310-9956-ffa450edef68
Resolve Merge conflicts with apache_hive/ptf_windowing