The main bulk of this is the new start screen code. To make this work in Raze some more work on the startup procedure is needed.
What this does provide is support for the DOS end-of-game text screens in Duke and SW on non-Windows systems.
* the palette shader was not bound.
* the palette textures were not bound.
* palette mode still used regular lighting on top of the palette emulation
This works a lot better than before but is still not complete.
