I created a new and cleaner favicon for mesa3d.org, and it seems like a
good idea to use that one for the docs as well.
While we're at it, replace the original PNG with the original SVG asset
the ICO-file was generated from.
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5643>
favicon.png is just gears.png resized to 64x64, and favicon.ico is
generated using this command, adapted from the ImageMagick example [1]:
$ convert favicon.png -background black \
\( -clone 0 -resize 16x16 \) \
\( -clone 0 -resize 32x32 \) \
\( -clone 0 -resize 48x48 \) \
\( -clone 0 -resize 64x64 \) \
-delete 0 -alpha off -colors 256 favicon.ico
We could edit every html page to add `<link rel="icon" href="favicon.ico" />`,
but there's not much point as pretty much every browser will pick it up
automatically if the file is named `favicon.ico` and is in the root folder.
[1] http://www.imagemagick.org/Usage/thumbnails/#favicon
Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>