I added the CMakeLists.txt 6 or 7 years ago so I could load the code
into Jetbrains Clion. I have moved to another editor years ago and the
cmake stuff is effectively unmaintained since then. We kept it around
in case that we'll do a MSVC port, but that's unlikely at this point.
Since bugreport and problems with the CMakeLists.txt keep coming up,
finally retire them. They can be resurrected from the git history if
we'll ever need them again.
Part of yquake2/yquake2#725.
The old whitelist was a leftover from the early days of YQ2. It should
run on most / all architectures, as long SDL supports them. As suggested
by smcv in issue #138 generate the OSTYPE and ARCH defines by the build
system instead of hardcoding it.
Savegame compatibility is provided by bumping the savegame version. Old
savegames are compared against the old OSTYPE and ARCH defined, new ones
against the new defines. This compatibility code should be removed
somewhere in the distant future.
