Metalinks Code

Brian Carpenter gen-art review:
This is a bit picky, but section 4.1.2 contains a series of rules like
this one:

o metalink:file elements MAY contain exactly one metalink:copyright
element.

Note that (if parsed rigorously according to RFC2119) this does not forbid an
element that contains more than one metalink:copyright element. To be rigorous,
you'd have to add "and MUST NOT contain more than one such element".

Added GPL headers

Handle urlfetch return values

- Handle urlfetch return values
- Add AUTHORS file

New version of xml2rfc

Fix CLRF and README

- Remove all CLRF from the files
(use WordPad instead of Notepad on Windows if needed)
- Updated README to reflect the usage of console.py instead
of metalink.py

Base validator introduction

- Introduces basic structure of validator
- Fetch page on request
- More TODO in the README
- Taken up two tasks in the README by prepending my name

Introduce template to homepage

Fix favicon

Start of the metalink validator service

Added all the basic Google App Engine code (very rough!)
Added README with short-term roadmap

ipr="trust200902"