system documents contributors file

[Matthew East]

Hi,

In libs/C/contributors.xml[1] we currently have a distinction between
"maintainers" and "contributors". This is (a) difficult to keep up to
date, and (b) not really reflective of the system we have where anyone
in ubuntu-core-doc can upload directly to the branches.

[1] http://tinyurl.com/46hy9c

How about we just have an alphabetical list of all contributors, and a
small note explaining the role of ubuntu-core-doc?

-- 
Matthew East
http://www.mdke.org
gnupg pub 1024D/0E6B06FF