[PATCH][win32] rmtree read-only files and dirs on win32

[Aaron Bentley]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Alexander Belchenko wrote:
| Attached patch helps to remove read-only files and directories on win32.
| Pleae, review this patch.
+1

This is a good start, but I think we can go further; I think we should
provide an "always-works" version of rmtree in osutils, and start using
it everywhere.

Aaron
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.1 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org

iD8DBQFD0ogk0F+nu1YWqI0RAmUtAJ9LgUTsDBP6rQGD6qWU5uwZXFTKzgCfUvdO
DiAjMCb4kPvTrEStxmqXyRY=
=HEUf
-----END PGP SIGNATURE-----