[XML-SIG] gray areas in Python SAX API

[Martin v. Loewis]

> "All XMLReaders are required to support setting
> http://xml.org/sax/features/namespaces to true and
> http://xml.org/sax/features/namespace-prefixes to false."
> 
> My opinion is that it is a reasonable requirement. Please note that this
> does not require any change in Expat. Just the wrapper should not raise an
> exception when setting namespace-prefixes to false.

That is certainly reasonable to do. Feel free to commit a patch.

Regards,
Martin