Update to 0x09

* Fixed 'always cart' setting not being cleared when a player
disconnects.
* Fixed changing teams allowing you to instantly respawn on the other
team.
* Added cvar to allow suiciding (Thanks McKay, yes I copied your method,
just changed slightly).
* Added cvar to only allow entering a car after respawning, as opposed
to as soon as you use the command.
* Changing cv_bumpercar_teamonly mid-game now removes people's
bumpercars if they're on the wrong team.
- Warning: Does NOT check for sd_doomsday_event minigames yet!