[MERGE] Implement and use Repository.iter_files_bytes

[Robert Collins]

On Mon, 2007-08-20 at 10:37 -0400, Aaron Bentley wrote:
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> Here is a new version that I hope will address Martin's and Robert's
> reviews.
> 
> I have updated the docstring to be clearer about what identifiers are.
> 
> I have tested the two major error cases: revision not present and
> file-id not present.
> 
> Since there is no interface between TreeTransform and iter_files_bytes,
> I have not tested that.  iter_files_bytes is used by revert and
> build_tree, and causing them to generate either kind of error would
> require mocking up a malformed tree to pass as input.

bb:approve

-Rob
-- 
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