[merge] trivially add KnitVersionedFiles repr

[Jonathan Lange]

On Thu, Sep 11, 2008 at 2:18 PM, Martin Pool <mbp at canonical.com> wrote:
> This class does sometimes occur in errors like
>
> bzr: ERROR: Revision
> {('mbp at sourcefrog.net-20080502082540-jf964t0zy107xut2',)} not present
> in "<bzrlib.knit.KnitVersionedFiles object at 0x8d0394c>".
>
> it would be useful to know just where the problem is.
>

Looks fine to me.

jml