get_record_stream adapters

[John Arbash Meinel]

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Robert Collins wrote:
> I'd like to change the adapter signature to take the source _record_ not
> just the bytes, for adaption.
> 
> I'd like to do this to allow a slightly richer interface for adapters,
> which will make handling knit types coming off the network simpler, but
> shouldn't result in a loss of generality.
> 
> The only constraint it will add is that the storage-kind should match
> the class of the factory.
> 
> -Rob

Makes sense to me.

John
=:->

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