some fixes for selftest on win32

[Alexander Belchenko]

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John Arbash Meinel пишет:
> John Arbash Meinel has voted +1 (conditional).
> Status is now: Approved
> Comment:
> I don't think we need an "if sys.platform == win32". We can just always
> set LANGUAGE, LANG, and LC_ALL to 'C'.
> 
> It doesn't break anything to do so, and I would really prefer to avoid
> platform specific behavior whenever possible.
> 
> 
> And I think the test_external_diff_binary_lang_c can just do
> 
> old_env = {}
> for lang in ('LANG', 'LC_ALL', 'LANGUAGE'):
>   old_env[lang] = osutils.set_or_unset_env(lang, 'C')
> 
> and then later do:
> 
> for lang, old_val in old_env.iteritems():
>   osutils.set_or_unset_env(lang, old_val)

Changed as you suggested. And submitted.
Attached patch for reference.

[µ]


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