Note, these files are now part of PyXML 0.7.
  http://sourceforge.net/projects/pyxml

These files include Reagle's latest source
tweaks.

c14n.py
   The c14n module.
ns.py
   Definitions of namespaces and their URIs.
test_c14n.py
   Regression test for examples from spec and command line
   processing options (input/output/xpath).