v1.4 prep

See merge request KartKrew/Kart!631

Notably implemented with a hack, but these have already or will be rewritten for Ring Racers, and backporting isn't viable or desirable, so functional is better than the alternative.

Because its z was being set but its old z wasn't being overwritten, at high enough refresh rates you can see it appear above its starting position for a single frame.

Done by modifying old_z instead of using P_SetOrigin for consistency of avoiding CheckPosition.

* Backport the fix to an interp-based crash caused by using a combination of interpolated and uninterpolated scale in renderer calculations.
* Between this and the last commit, I attempted a refactor of this and associated functions in order to find the cause of the above crash. Committed are the changes which resulted in increased performance.

Revised the "last updated" instead of appending because we don't need to give internal-only changes too much spotlight.

(v1.4) cmake improvements

See merge request KartKrew/Kart!634

Windows bug; RPT files were not being generated for
toaster on Windows 11. Eventually it was narrowed to down
to direct3d driver specifically.

(v1.4) Purge a bunch of legacy/unused stuff

See merge request KartKrew/Kart!633

Aren't used and definitely should not be in here anymore

Blast from the past, buuuut let's trim the fat here too.

Written in VB6. Superceded by better tools and also probably not even
buildable anymore.

SRB2 no longer works with 1.2 or Dreamcast so these are irrelevant

Superceded by far superior tools

Once more, SRB2 no longer works on DOS so this is irrelevant

SRB2 no longer works on DOS so this is irrelevant

Also unsupported and nonfunctional

This thing is ancient history and also depends on FMOD.

yay icon

This properly links dylibs set during build instead of expecting
the libraries to be in the system path.

# Conflicts:
#	src/sdl/CMakeLists.txt

Technically just removes one event that causes the crash instead of the actual crash, but I tried attacking it at the source and it's some nasty, nasty stuff...

And add a little extra to the comment for anti-footgun insurance.

* New version number.
* New MODVERSION.
* New asset hashes.
* Disable patch.kart requirement.
* Remove the request to modify CMakeLists.txt, because that got revamped and grabs the version number from elsewhere now.

Located by my new compiler! Also a nice, simple test commit for my new Git client...

Also, I fell for the copypasted code bait CLASSIC, so now all instances of the Ruby are decoupled from FPS cap.