Code review comment for lp:~gerard-/bzr/update

I let John review this as he's more familiar that code.

Just a couple of comments on some details.

While you're tweaking, can you fix the lines too long
(see doc/developers/HAKCING.txt Coding Style Guidelines) ?

Also, if you disagree with some comments, update them instead
of deleting them (bzrlib/tests/blackbox/test_update.py).

Can you also have a look at http://www.canonical.com/contributors so we can merge your patch
once it is approved ?

You may also add a NEWS entry mentioning the bugs you're addressing.
Make sure you have tests reproducing them.