[issue2963] Rename Warning on Windows

[David Golub]

New submission from David Golub <golubdr at gmail.com>:

Mercurial fails to rename files on Windows if the old and new name differ 
only by case.  For example, running

hg rename file1.txt File1.txt

produces the error message

File1.txt: not overwriting - file exists

Even though there cannot be two files named file1.txt and File1.txt on 
Windows, it should still be possible to perform a rename operation that 
changes the case of a filename.

----------
messages: 17176
nosy: golubdr
priority: bug
status: unread
title: Rename Warning on Windows

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Mercurial issue tracker <bugs at mercurial.selenic.com>
<http://mercurial.selenic.com/bts/issue2963>
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