* Enable webpng on MINGW
* Detect GD version using cmake language
* Use _aligned_malloc instead of posix_memalign on Windows
* Include missing "errno.h"
* Fix finding WEBP on MINGW
* Fix finding XPM on MINGW
* Use PkgConfig to find packages on MINGW
* CI: Enable more options for MINGW
With the adoption of AVIF by Firefox and Chromium based browsers (still
in experimental phase), the newer incorporation of HEIF by Canon and Sony
in their cameras and the newer support of both of them in modern software
like ImageMagick, GIMP and Krita, `gd` haven't seen any endorsement for
the formats up until this PR.
Reading and writing is done by `libheif`, with functionality for chroma
subsampling (for now `4:2:0`, `4:2:2` and `4:4:4`), quality (with new
`200` for lossless) and compression (whether `HEVC` or `AV1`) selection.
This was tested with `libheif` version `1.11.0` in my Solus machine.
Also, fixes both #395 and #557.
مهدي شينون (Mehdi Chinoune)
Pierre Joye
Martin Reboredo
Martin Reboredo