Changes:
- Bugfix: Perfectly point-blank pistol shots had no effect.
- Bugfix: If you left the light amps on, they'd automatically turn off after the normal Doom time limit.
- Lite amps now waste a tiny bit of power every time you turn them on.
- Reduced chaingunguy spread.
- Slight changes to zombieman turn thresholds. They might conceivably be more accurate now.