Yadis Spec .9 Change Proposal: Sect 6 - HTTP Protocol

[Larry Drebes]

Add fetching rules for HTTP/HTTPS and for redirects. These rules apply 
to the rest of the protocol spec.

text to add in section 6

6.1 Use of the HTTP Protocol

 * The YADIS protocol relies on the standard HTTP protocol. Requests or 
responses that are nonconforming to the RFC2616 are considered broken.

 * The use of HTTP in this document implies using HTTPS when the 
protocol identifier is /https/.

 * Agents should follow HTTP redirect responses. Agents may terminate a 
chain of redirect responses after a reasonable depth.