PIG-3492: ColumnPrune dropping used column due to LogicalRelationalOperator.fixDuplicateUids changes not propagating

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1535087 13f79535-47bb-0310-9956-ffa450edef68
PIG-3530: Some e2e tests is broken due to PIG-3480

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1535098 13f79535-47bb-0310-9956-ffa450edef68
PIG-3516: pig does not bring in joda-time as dependency in its pig-template.xml

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1535111 13f79535-47bb-0310-9956-ffa450edef68
PIG-3518: Need to ship jruby.jar in the release

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1535113 13f79535-47bb-0310-9956-ffa450edef68