bug#51381: HEIF image format support

[Stefan Kangas]

Glenn Morris <rgm@gnu.org> writes:

> Stefan Kangas wrote:
>
>> How about supporting the GraphicsMagick library instead of or in
>> addition to ImageMagick?  Or was that already rejected?
>
> I took no comments in 4+ years as a sign no-one was interested:
> https://debbugs.gnu.org/14358

Thanks, Glenn.  I will reopen that bug to see if the situation has
changed since 2014.