PIG-2409: Pig show wrong tracking URL for hadoop 2 (lbendig via rohini)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1601019 13f79535-47bb-0310-9956-ffa450edef68
PIG-3989: PIG_OPTS does not work with some version of HADOOP

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1601040 13f79535-47bb-0310-9956-ffa450edef68