Metalinks Code

Clarifications

schema fix

license schema changes

Eran Hammer-Lahav review

metalink-24 start

metalink23-final

intro:
- mention multi-protocol nature of Metalinks.
- describe how verification in Metalinks solve trust issues with replicas of content on mirrors.
- distinguish more clearly between human users and user agents
- various minor improvements.

wrap long lines in the introduction, so that changed can be reviewed more easily.
(no content changed.)

file size is xsd:nonNegativeInteger

Move RFC3688 from Normative to Informative Reference

"Discussion of this draft should take place on discuss@... Past discussion has gone on at the Metalink discussion mailing list"