PIG-3979: group all performance, garbage collection, and incremental aggregation (rohini)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1636371 13f79535-47bb-0310-9956-ffa450edef68
PIG-4257: Fix several e2e tests on secure cluster

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1636407 13f79535-47bb-0310-9956-ffa450edef68
PIG-4263: Move tez local mode unit tests to a separate target

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1636410 13f79535-47bb-0310-9956-ffa450edef68
PIG-4160: Provide a way to pass local jars in pig.additional.jars when using a remote url for a script

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1636468 13f79535-47bb-0310-9956-ffa450edef68