See [announcment](https://lists.freedesktop.org/archives/xorg/2021-February/060615.html)
Other changes:
- Refactor based on -devel port ([no autotools](https://gitlab.freedesktop.org/xorg/xserver/-/commit/9de9c3127325))
- Assume maintainership (critical for a lot of my ports)
IMPORTANT: Some -devel bug fixes are missing, see https://gitlab.freedesktop.org/xorg/xserver/-/compare/xwayland-21.1...master