This (unfortunately) migrates from meson to cmake, some
revamping been done to adapt.
May still be a few things to adjust, the cli build (autoconf) vs
gtk (cmake, with a new not entirely perfect CMakeLists.txt) and
then libretro too (Makefile-only) makes the ebuild and dependency
checks messy.
Most of this may need review next bump.
Signed-off-by: Ionen Wolkens <ionen@gentoo.org>
Ionen Wolkens
c625adb56c