PIG-4145: Port local mode tests to Tez - part1

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PIG-4144: Make pigunit.PigTest work in tez mode

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PIG-4146: Create a target to run mr and tez unit test in one shot

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PIG-4149: Rounding issue in FindQuantiles

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PIG-4143: Port more mini cluster tests to Tez - part 7

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PIG-4143: Port more mini cluster tests to Tez - part 7

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PIG-4153: Pin Tez to 0.5.0 release (cheolsoo)


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PIG-4153: Pin Tez to 0.5.0 release (PIG-4153-3.patch)

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PIG-4143: Port more mini cluster tests to Tez - part 7 (PIG-4143-5.patch)

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PIG-4158: TestAssert is broken in trunk (cheolsoo)


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PIG-4157: Pig compilation failure due to HIVE-7208

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PIG-4155: Quitting grunt shell using CTRL-D character throws exception

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PIG-4154: ScriptState#setScript(File) does not close resources

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