bug#18334: 24.3.93; ImageMagick: eww shows favicon animations in search results

[Juri Linkov]

> I think perhaps I meant to do something like the following, which I
> applied to emacs-24.
>
> However, AFAICS now nothing is animated in eww.
> Perhaps this is related to shr's preference for ImageMagick and the fact
> that that backend still does not return a delay
> (http://debbugs.gnu.org/10747).

I guess we need to install the patch from bug#10747 to emacs-24 as well,
so an animated image could be detected in imagemagick by its delay,
since non-zero delays is one way to detect an animated format according to
http://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=11988