wip/rottexpr NetBSD

This source port of Rise of the Triad features the following:

• Now runs off of SDL2!
• Support for resolutions from 320x200 all the way to 3840x2160
• Adaptive HUD positioning (no more status bar being off to the side)
• HUD scaling (HUD scaling for bottomless HUD coming later)
• Support for bordered and borderless windowed modes

New gameplay options:

* Blitzguards being outfitted with any weapon from the missile/magic weapon arsenal! Yes, that means Blitzguards can use excalibats too! * You can now pick up ammo from dropped missile weapons! * A special respawning enemy game mode called ZomROTT, where you have to gib your enemies to keep them from coming back!