bug#8644: font-locking of multi-author changelog entries

[Eli Zaretskii]

> From: Juanma Barranquero <lekktu@gmail.com>
> Date: Tue, 10 May 2011 22:31:02 +0200
> Cc: Glenn Morris <rgm@gnu.org>, 8644@debbugs.gnu.org
> 
> > Ideas cannot be copyrighted, so
> > only the one who wrote the final version should be named, the rest can
> > be attributed as "suggested by" or whatever.
> 
> That depends on how much was done by the other people. Sometimes the
> one who didn't code a line did all design decisions. "Suggested by"
> does not cover it IMHO.

Design is still ideas.  We could use "design ideas suggested by..." or
anything else.