[PATCH] fixutf8 module

[Shun-ichi GOTO]

Excellent!
This extension will completely obsoletes win32mbcs extension.
My local tests are all passed with your extension.

And I think the way of 'handling utf-8 file name internally' is good for
some extensions like 'convert' and 'hgsubversion'.

BTW, for the internal-utf-8 way, there is an odd issue of text conversion
in some place (e.g. changelog, localrepo) depending local encoding
inside API.
When I tried the utf-8 aproach before, this issue bothered me...

-- 
Shun-ichi GOTO