[issue20355] -W command line options should have higher priority than PYTHONWARNINGS environmental variable

[Arfrever Frehtes Taifersar Arahesis]

Changes by Arfrever Frehtes Taifersar Arahesis <Arfrever.FTA at GMail.Com>:


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stage: needs patch -> patch review

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20355>
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