new xkms requirements revision

I've revised the XKMS requirements Editor's Copy document [1] to
fix a list numbering bug with the last revision, a typo, and an
XHTML issue. It has gone through tidy and the W3C validator.

Thank you very much for your help Joseph.

regards, Frederick
 
Frederick Hirsch
Nokia Mobile Phones

[1] http://www.w3.org/2001/XKMS/Drafts/xkms-req.html