PIG:3723 Change tez version dependency as a result of TEZ-739 (hitesh via rohini)

git-svn-id: https://svn.apache.org/repos/asf/pig/branches/tez@1561797 13f79535-47bb-0310-9956-ffa450edef68
PIG-3658: Use Tez ObjectRegistry to cache FRJoin map and WeightedRangePartitioner map (rohini)

git-svn-id: https://svn.apache.org/repos/asf/pig/branches/tez@1561841 13f79535-47bb-0310-9956-ffa450edef68
PIG-3719: Fix skewed join e2e tests (cheolsoo)


git-svn-id: https://svn.apache.org/repos/asf/pig/branches/tez@1561891 13f79535-47bb-0310-9956-ffa450edef68