Un-Prioritized OpenDuke TODO
- CON stuff
 - Load CONs from GrpFile's unless specified
 - Define more stuff
 - Get the menu to use the level names from the CONs
 - Fix up error handling bigtime
- Keyboard stuff
 - Better Keyboard handler (allow holding of keys)
- Kill lagged sound
- Config files
- Fix various rendering issues
- Make SDL version compile on Windows
- ScreenShot code for software renderer
