Adding bsdiff to the base system

[Mario Hoerich]

# Robert Watson:
> On Wed, 30 Mar 2005, Colin Percival wrote:
> >   I'd like to add bsdiff/bspatch into the base system.
[...]
> I think this would be a useful addition. 
[...]

Not that it's important, but the names probably aren't
the best possible choice, as 'bsdiff' seems to suggest 
'BSD licensed diff'. (See bsdtar.) 

Then again, maybe it's just me.

Regards,
Mario