Updated namespace documents

Please take a look and let me know if you see problems.

http://www.w3.org/XML/XProc/docs/ns-xproc.html
http://www.w3.org/XML/XProc/docs/ns-xproc-step.html
http://www.w3.org/XML/XProc/docs/ns-xproc-error.html


                                        Be seeing you,
                                          norm

-- 
Norman Walsh <ndw@nwalsh.com> | It is seldom that any liberty is lost
http://nwalsh.com/            | all at once.--David Hume