PIG-3454: Update JsonLoader/JsonStorage

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1523773 13f79535-47bb-0310-9956-ffa450edef68
PIG-3454: Update JsonLoader/JsonStorage

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1523775 13f79535-47bb-0310-9956-ffa450edef68
PIG-3065: pig output format/committer should support recovery for hadoop 0.23

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1524152 13f79535-47bb-0310-9956-ffa450edef68
PIG-3235: Avoid extra byte array copies in streaming (rohini)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1524181 13f79535-47bb-0310-9956-ffa450edef68