Web Services for Python

When calling WSDL::toDom() on a WSDL object which was created from a file
which imports several other WSDL files with different namespaces, all
definition objects are thrown together in the resulting XML structure. For
example, two message definitions ns1:msg and ns2:msg are then specified as
tns:msg.
The WSDL handling should probably be split out and improved to the point
where reading a document with attached WSDL imports and XSD includes will
return the connected set of definitions, and writing this document will
preserve these connections.

A particular use case for me would be identifying the files related to a
service description and rewriting the URLs for all imports and includes.