Sort contrib.additional.sgml in alphabetical order

[Giorgos Keramidas]

On 2005-10-14 13:34, Renato Botelho <rbgarga at gmail.com> wrote:
> Hello all,
> 
> I was adding a new entry on this file ans saw a lot of entries out of
> alphabetical order, so, I decided to fix it, and made this patch:
> 
> http://people.freebsd.org/~garga/contrib.additional.sgml.diff
> 
> Could someone take a look and tell-me if it's ok to commit?

After a fast skim through the patch and a check that no names
were added and/or removed only, it seems pretty fine from here.
If it also builds fine, please commit it.

- Giorgos