Architectural Roles document updated

Per my action item from our last F2F, I have added the following to the 
"Web Services Architectural Roles" document that I presented at the F2F:

1. A "Scenario 0" depicting the conventional Web[1]

2. A "Scenario T", which shows how the "triangle diagram" maps to the more 
detailed scenarios described in that document.

I have also cleaned up the other diagrams a little more to make them 
(hopefully) clearer and more consistent.  In particular, I've now used a 
wiggly line to indicate a document somehow going from one place to another, 
even though it may not be transmitted directly.

See:
http://www.w3.org/2002/ws/arch/2/10/roles_clean.htm#scenario0_current_web 
(Scenario 0)
http://www.w3.org/2002/ws/arch/2/10/roles_clean.htm#scenariot_triangle_diagram 
(Scenario T)

Thanks to Heather Kreger for her input and brainstorming with me on how to 
clarify the diagrams.


-- 
David Booth
W3C Fellow / Hewlett-Packard
Telephone: +1.617.253.1273