Adjust SCUBA Gear autouse behaviour so it works properly with manual use.
Add 3D floor handling code on various things.
Increased size of Eightball explosions to match original game.
Fix invisibility playing no sound when activated.
Add SMP 7243 from Oldskool to the BFG pool (toggleable).
Random fixarounds.
Spent mag models for the pistols, will be used (and backported to DT) soon.
