Recent bugfixes in SVN

[thelusiv]

Joe has been fixing bugs and rewriting sloppy code left and right lately. He's improved the TEXTURE class which hopefully will remove the problems of all-white textures and difficulty changing resolutions during a running game. He's also cleaned up some problems in the SOUND class.

While I get less sound problems now I've noticed that after going through a few cars, and starting a game and then leaving, and coming back later into a new game after looking through cars a few more times, the sounds get messed up. The engine sound gets spotty instead of smooth, and the tire squeal sound is replaced by a droning engine sound.