[issue7443] test.support.unlink issue on Windows platform

[Nick Coghlan]

Nick Coghlan <ncoghlan at gmail.com> added the comment:

I'll throw in my 2 cents as to a possible way forward:

- fix test.support.unlink in all current maintenance branches (2.7, 3.1, 3.2, default)
- expose the feature to users as "shutil.rmfile" for 3.3

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<http://bugs.python.org/issue7443>
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