[PATCH 2 of 4 V2] copies: refactor checkcopies() into a top level method

[Augie Fackler]

On Tue, May 7, 2013 at 12:56 PM, Durham Goode <durham at fb.com> wrote:
> The general goal is to get all of our file contents off our client
> machines and into a memcache like service. Then we only pull down the
> files that are needed during an update. So we have a revlog implementation
> that acts more like a key/value store than a revlog and fetches the values
> from a remote server as needed.


*nod*, sounds like what we talked about in March. I'd like to do
enough work on this that we could use the same extensibility hooks for
hg-on-bigtable some day.