JDiff change for 0.11.0

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1448899 13f79535-47bb-0310-9956-ffa450edef68
PIG-3189: Remove ivy/pig.pom and improve build mvn targets (billgraham)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1448907 13f79535-47bb-0310-9956-ffa450edef68
PIG-3189: Remove ivy/pig.pom and improve build mvn targets (billgraham)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1448908 13f79535-47bb-0310-9956-ffa450edef68
Merge branch 'trunk' of https://github.com/apache/pig into trunk