[XML-SIG] problem with empty namespace uri

[Martin v. Loewis]

> My opinion is that names that have no namespace URI should be
> represented using None rather than "".

That would be fine if agreed-upon, especially as it is consistent. I
just point out that this would be another deviation from the Java,
which then should be explicitly documented as such.

I agree on your point to agree first, and change the code then :-) I'd
go further to change the documentation before changing the code.

Regards,
Martin