OpenGL: Try and Match Software Wallclipping Better

See merge request !150

Revert mserv

See merge request !144

Fix SIGSEGV when saving replays and invalid extrainfo offset

See merge request !149

Don't get stuck in room menu in a modified game

See merge request !145

I've tried to make this so it almost never under-compensates, and over-compensates very little where possible.
I don't think it's 1:1 to software's current behaviour, and probably never will be due to software being very strange.

Fixes SIGSEGV when saving a replay.

Has the added benefit of fixing noclip camera for opengl
Unfortunately SkyWalls are kinda broken with this. I'll be looking into them shortly.

Spell it "forward"

See merge request !147

Fix fileneeded overflow

See merge request !146

Print the correct player for the view command

See merge request !141

Stop OpenGL having infinite precipitation draw distance

See merge request !143

Fix compatibility with the MS (Specifically Doomseeker)

See merge request !142

Send back 32 players worth of playerinfo regardless of MAXPLAYERS. Fill the extra with unconnected nodes.

This reverts commit 4d739fe7.

This reverts commit aa4ce2b2.

This reverts commit fc8ebe83.

V1 errors

See merge request KartKrew/Kart-Public!140

I'm faily certain this also fixes broken logic (g_game.c).

The truncation handling in this one spot is okay, but the compiler isn't smart
enough for it. I'm leaving it as a warning because I'd like to make a dedicated
function for handling snprintf truncation in the future.

This reverts commit 995edfb1.

V1 lua stuff

See merge request KartKrew/Kart!155

THIS SHOULD BE THE LAST TIME I SWEAR

Fix Post Processing in 64-bit Software 3P/4P

See merge request KartKrew/Kart!156

This reverts commit a2a63c5e.