[MERGE] Allow rename (change case of name) directory on case-insensitive filesystem.

[Alexander Belchenko]

Currently on Windows bzr is unable rename (change only case of name) for directories:

bzr mkdir foo
bzr mv foo Foo
bzr: ERROR: Could not move to Foo: Foo is not versioned.

This patch fixes this problem. Fixing this problem is mandatory for me
to allow bug fix from Lukas for https://bugs.launchpad.net/bzr/+bug/107967.

http://bundlebuggy.aaronbentley.com/request/%3C1201432703.7423.3.camel@nemo%3E

Lukas said that he don't want to fix case-sensitive problem.
So I finally fixed it today.

Of course after merging this patch mentioned bug fix should be updated as well.
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: bzr-mail-rdlmmk.patch
Url: https://lists.ubuntu.com/archives/bazaar/attachments/20080229/c0b8326c/attachment.diff