PIG-3787: Multiquery with FRJoin fail (daijy)


git-svn-id: https://svn.apache.org/repos/asf/pig/branches/tez@1574168 13f79535-47bb-0310-9956-ffa450edef68
PIG-3795: Parallelism specified by user is not honored if default parallelism
is set to a higher value (cheolsoo)


git-svn-id: https://svn.apache.org/repos/asf/pig/branches/tez@1574170 13f79535-47bb-0310-9956-ffa450edef68