PIG-3816: Incorrect Javadoc for launchPlan() method

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1578746 13f79535-47bb-0310-9956-ffa450edef68
Update copyright year in NOTICE


git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1578958 13f79535-47bb-0310-9956-ffa450edef68
PIG-3815: Hadoop bug causes to pig to fail silently with jar cache (aniket486)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1579006 13f79535-47bb-0310-9956-ffa450edef68
PIG-3844-1