PIG-3892: Pig distribution for hadoop 2

git-svn-id: https://svn.apache.org/repos/asf/pig/branches/branch-0.13@1604060 13f79535-47bb-0310-9956-ffa450edef68
PIG-3892: Pig distribution for hadoop 2 (PIG-3892-4.patch)

git-svn-id: https://svn.apache.org/repos/asf/pig/branches/branch-0.13@1604097 13f79535-47bb-0310-9956-ffa450edef68