[rfc][patch]

[Erik Bågfors]

I've implemented "bzr pull --revision X". Well, most of the
functionality was already there, I just exposed it in the ui.

I am not sure about the code, am not used to python and haven't done
anything inside bzr almost. So feel free to call me an idiot in the
way I wrote the code.  Comments are welcome.

I also added a test case but I can't get the standard test suite to
pass so I can't even get it to my code. So the test is totally
untested :)

Get it from http://erik.bagfors.nu/bzr.pull-revision

Merry Christmas all.

Regards,
Erik