I came back to look at this after I couldn't get it to run a while ago and I am impressed. I used to sit awake until the early hours playing UFOEU; I've been meaning to give my best for three days now but, the strangest thing, I've been playing a very addictive video game. Guess which...
I have trouble with textures on the svn latest but 2.2 is still awesome.
Unfortunately I don't have a lot of spare time, I'm a mature student and I'm on easter break right now; I am a (ex) programmer, maybe if you need it and time permitting I could help out in the summer. I have some experience with SDL but I'd need to do some reading about OpenGL as I'm sure its moved on.
Anyway, nice work people.