First step in improving controller support.

- The skin values are now locked between 1 and 9.
- kartspeed & kartweight are no longer locked on skin-switch. Combined with the above, this results in no gameplay change, other than the character select showing the proper value.
- Values used for the engine sounds are locked. No longer can overflow into character voices or freeslotted sounds.
- Removed the overzealous weight locking when in offroad.

If we want to ACTUALLY lock speed/weight for Lua too then we should do that in the Lua stuff.

Another typo here

- Make dust retain some of your speed so it's more visible
- Only play effect when moving and on the ground

This fixes two bugs:
- Makes it so that the countdown happens when all the winners are ACTUALLY in instead of the first loser, because exiting timer wasn't set for the last winner in the place this was down before
- Means that the countdown timer can be set on disconnect

Finish countdown only starts when all winners are declared

See merge request KartKrew/Kart!99

Avoid Modifying Default Controller Layout Manual Page

See merge request KartKrew/Kart!102

Fix the player in 16th not being visible in rankings

See merge request KartKrew/Kart!103

Nextmerge again

See merge request KartKrew/Kart!101

Fix the Memory Leak

See merge request KartKrew/Kart!100

Swap gc_lookback and gc_brake's default binded keys on controllers. (see the first issue in http://mb.srb2.org/showpost.php?p=802758&postcount=30)

# Conflicts:
#	src/d_clisrv.c
#	src/m_misc.c

The Kart Minimap heads I believe should use GTC_CACHE as they're shown in level, only(?) Not using it causes the memory to keep creeping up as more colourmaps are loaded but not freed, while OpenGL by extention endlessly keeps making new textures for the "new" colourmaps.

Negate `(netgame || multiplayer)` condition for countdown to use `defaultvalue` instead of `value` per the specifics of the previous implementation

Camera subsector crash fix

See merge request STJr/SRB2!318

Still removing/changing crusty vanilla holdovers, one at a time. :shitsfree:

Also the MS seems to just throw the entire char array into the website and ignore null terminators, so I'm memsetting maptitle all to 0 before we do anything with it.

(I could've SWORN there were more...)

Enable patch.kart, up version number

As well as other compile errors

Fix textures in GL being wacky with the screen.

See merge request KartKrew/Kart!91

- karteliminatelast uses CV_YesNo instead of CV_OnOff
- chatbacktint defaults to on
- soniccd defaults to off