InCommon metadata support

[Ian Young <>]

> On 16 Feb 2016, at 21:53, Tom Scavo 
> <>
>  wrote:
> 
> Essentially we elevated namespace
> declarations to parent elements wherever possible. In some cases,
> those declarations were elevated all the way up to the root element.
> This saved a lot of space but perhaps it is contributing to the
> behavior Jeffrey is seeing, I don't know.

I don't see any reason why that optimisation would make signature 
verification take longer (if anything, I'd guess the opposite), but as Scott 
implies that is a rather large chunk of code we don't have a lot of insight 
into.

If you want a test, mdq-beta would be one place to do it but the other option 
would be to just comment that line out of the import tooling and run it 
again, then sign both outputs.

    -- Ian

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