PIG-3800: Documentation for Pig whitelist and blacklist features (prkommireddi)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1598346 13f79535-47bb-0310-9956-ffa450edef68
PIG-3968: OperatorPlan.serialVersionUID is not defined

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1598365 13f79535-47bb-0310-9956-ffa450edef68
PIG-3967: Grunt fail if we running more statement after first store

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1598445 13f79535-47bb-0310-9956-ffa450edef68
PIG-3679: e2e StreamingPythonUDFs_10 fails in trunk (addendum commit for backward compatibility)


git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1598447 13f79535-47bb-0310-9956-ffa450edef68
PIG-3874: FileLocalizer temp path can sometimes be non-unique (chitnis via cheolsoo)


git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1598448 13f79535-47bb-0310-9956-ffa450edef68