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

git-svn-id: https://svn.apache.org/repos/asf/pig/branches/branch-0.14@1636372 13f79535-47bb-0310-9956-ffa450edef68
PIG-4257: Fix several e2e tests on secure cluster

git-svn-id: https://svn.apache.org/repos/asf/pig/branches/branch-0.14@1636406 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/branches/branch-0.14@1636408 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/branches/branch-0.14@1636409 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/branches/branch-0.14@1636467 13f79535-47bb-0310-9956-ffa450edef68