build.xml modified so that I can compile and test in eclipse
Merge remote-tracking branch 'upstream/trunk' into trunk
wip. New lexer and parser grammar.
Adding comments
Fixed lexer definition
wip. PigScriptParser.g
wip. applying a patch from a previous GSoC project.
wip
Merge remote-tracking branch 'upstream/trunk' into trunk
PIG-4027: Always check for latest Tez snapshot dependencies (lbendig via cheolsoo)


git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1604049 13f79535-47bb-0310-9956-ffa450edef68
PIG-4001: POPartialAgg aggregates too aggressively when multiple values aggregated (tmwoodruff via cheolsoo)


git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1604050 13f79535-47bb-0310-9956-ffa450edef68
PIG-3892: Pig distribution for hadoop 2

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1604062 13f79535-47bb-0310-9956-ffa450edef68
PIG-4028: add a flag to control the ivy resolve/retrieve output

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1604069 13f79535-47bb-0310-9956-ffa450edef68
PIG-3892: Pig distribution for hadoop 2 (PIG-3892-4.patch)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1604096 13f79535-47bb-0310-9956-ffa450edef68
PIG-4022: Fix tez e2e test SkewedJoin_6

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1604234 13f79535-47bb-0310-9956-ffa450edef68
PIG-4020: Fix tez e2e tests MapPartialAgg_[2-4], StreamingPerformance_[6-7] (PIG-4020-2.patch)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1604237 13f79535-47bb-0310-9956-ffa450edef68
PIG-3975: Multiple Scalar reference calls leading to missing records (knoguchi via rohini)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1604284 13f79535-47bb-0310-9956-ffa450edef68
PIG-4030: TestGrunt, TestPigRunner fail after PIG-3892

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1604504 13f79535-47bb-0310-9956-ffa450edef68
PIG-4029: TestMRCompiler is broken after PIG-3874

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1604512 13f79535-47bb-0310-9956-ffa450edef68
PIG-4021: Fix TestHBaseStorage failure after auto local mode change (PIG-3463)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1604513 13f79535-47bb-0310-9956-ffa450edef68