suggested pkglint change: error on missing comment for patch

[Thomas Klausner <wiz%NetBSD.org@localhost>]

Hi!

I'd like pkglint to report errors from now on if a patch doesn't have
a comment.

The comment should be one of:
. upstream bugtracker link for bug report associated with this patch
. upstream scm link, if patch is from (newer) upstream
. comment explaining why this patch is needed for portability but not
  fed upstream
. your idea here, if any?

I don't want to rototill all packages for this, but new packages and
package updates should include this.

Why I want this:
. to increase the chance of patches being fed upstream
. to make it easier tracking this
. to make it easier to check what a patch is good for

Comments?

Cheers,
 Thomas