[MERGE] Add a smart method method that can pull a set of revisions in a single request

[Andrew Bennetts]

Aaron Bentley wrote:
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> Andrew Bennetts wrote:
> >> This looks pretty good.  I still don't see a direct test for 
> >> self.item_keys_introduced_by, though.  Without that, there's no 
> >> justification for implementing it on RemoteRepository.
> > 
> > I've added a test for this.
> 
> Thanks.
> 
> bb:approve

Thanks!

> > I've tidied up the long lines that I can; unfortunately the rather long class
> > name makes it hard to avoid in a couple of spots. Let me know if you have
> > specific suggestions to fix these,
> 
> Well, there's always the option of changing the class name to something
> shorter.

That's true.  But I'd either have to rename the method used on the wire, or
break the existing naming convention for request handlers to do this.

> The long line in test_is_incompatible_different_format_both_remote looks
> trivial to fix.

Oops, yes.  Thanks.

-Andrew.