- Redid fog.c OpenGL fog back-end implementation
* only reconfigure fog values when changed
* properly clamp between 0.0f and 1.0f colors
* error out on negative densities
* separate fog statics became single struct
- Added Nehe16 example (adapted from KGL)
* Made spinning much faster (so you can see it better)
* fixed a few issues with KGL code (invalid GL enums, lol)
* swapped to new controller API
* added #ifdef for non-DC file paths
