enhanced-meshroad -- adds option for building top-surface-only PolyList.
polysoup-zodiacs -- Changes made for rendering zodiacs on polysoup objects.
groundplane-zodiacs -- groundPlane customizations for rendering zodiacs on them.
special-types -- defines type bits for interior-like and terrain-like types.
special-types -- defines a type bit for polysoup objects.
- check for an empty shapName, not just a NULL one twice
- fix "&s" in printf
- fix potential memory leak
- GFXCopyPixels wasn't checking the height properly which could result in some meory corruption unpleasantness