#9 Headerless parse req/response methods

[Conrad Steenberg]

Implements the parseRequestXML, and parseResponseXML
methods that are equivalent to the parseRequest and
parseResponse methods, except that they don't assume
any header information in the messages.

Also, the buildResponseXML method that generates a
response, once again without building a header
information. This call is the equivalent of the
buildResponse method.

I use these to build an xmlrpc server with
Apache/mod_python that is fast and more powerful than
py-xmlrpc alone.

Conrad

[Conrad Steenberg]

Three new methods patch for headerless message handling.