[MERGE] bzr add should be less chatty about ignore rules

[Aaron Bentley]

Michael Ellerman wrote:

> I like the full list, but I can see that people with defective build
> systems[1] might be annoyed by it. With a more conservative ignore
> list I guess this is ok .. and it's merged anyway so .. :)

I like the full list too.  Not that surprising, since I implemented it. 
  I think there's a real risk now that a bunch of people will have their 
files ignored and not realize it.

It was nice that I didn't have to be the one making that argument, for once.

Aaron