Support for namespace export as default

[jdalton]

I saw this issue on the namespace export proposal and noticed it doesn't currently work with reify.

export * as default from 'foo';

[benjamn]

What's the error? Note that Acorn doesn't know how to parse this syntax.

[jdalton]

From acorn the error is:

SyntaxError: Unexpected token (3:9)

Is this something we can get around by using the loose acorn parser?
I think we'll end up using the loose one in the end.

[jdalton]

Closed by #146.