[xml] python, libxml2, namespaces, and locator

[Morgen Sagen <morgen osafoundation org>]

Under Python, I tried using libxml2 via the libxml2.SAXParseFile( ) 
method, but it calls only my StartElement( ) callback rather than 
StartElementNS( ).  Then I discovered the drv_libxml2.py driver and got 
that to work like so...

   self.parser = xml.sax.make_parser(["drv_libxml2"])
   self.parser.setFeature(xml.sax.handler.feature_namespaces, True)
   self.parser.setFeature(xml.sax.handler.feature_namespace_prefixes, 
True)

...except that it doesn't currently support setDocumentLocator.

Is there a way to enable the namespaces and namespace_prefixes features 
while using SAXParseFile( ) (or createPushParser( ), or ... )?

Much appreciated,
~morgen