wayland: bump required version to 1.10
Wayland 1.10 was released in Feb 2016 - just over 4 years ago.
Any distribution which refuses to update the package is felt to their
own demise.
We already require later versions, wayland scanner 1.15 and wayland
protocols 1.12 with other commits.
With next commit we'll fixup GCC 10 build issues, which makes supporting
wayland before 1.10 unmaintainable.
v2:
- don't mention wayland scanner/others
- drop wayland-version.h #include
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>