PIG-3086 Allow A Prefix To Be Added To URIs In PigUnit Tests


git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1437635 13f79535-47bb-0310-9956-ffa450edef68
PIG-3124:  Push FLATTENs After FILTERs If Possible

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1437765 13f79535-47bb-0310-9956-ffa450edef68
PIG-3082: outputSchema of a UDF allows two usages when describing a Tuple schema (jcoveney)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1437794 13f79535-47bb-0310-9956-ffa450edef68
PIG-3073: POUserFunc creating log spam for large scripts (jcoveney)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1437796 13f79535-47bb-0310-9956-ffa450edef68
Merge branch 'trunk' of https://github.com/apache/pig into trunk