Adding partition-by/order-by predicates to AnalyticEvalNode/TAnalyticNode.

Change-Id: Ie0448fbdc853147e8e2693e40eeb49655941ed47
Reviewed-on: http://gerrit.sjc.cloudera.com:8080/4014
Reviewed-by: Matthew Jacobs <mj@cloudera.com>
Tested-by: jenkins