Draft: simple update description guidelines

[Denis Leroy]

Rahul Sundaram wrote:
> * All Updates must refer to a upstream changelog or equivalent if one 
> exists. Otherwise a brief description (a couple of sentence at most) 
> justifying the need for an update must be provided by the maintainers 
> pushing the update.

-1

This is borderline insane.

Also this draft should be written by somebody who has significant 
packaging experience.