[WIP] Zardoz screen saver

I decided a screen saver would make a good first full start-to-finish test run. It is a tribute to the somewhat awful/awesome Sean Connery 70s flick Zardoz. All it does is glide around over the terrain, occasionally vomiting guns. The camera wanders around slowly -- it isn't just a straight line as it kind of looks in the video.

I still need to smooth out some of the "flying" (at times the normals go crazy, I think it's occasionally raycasting through small gaps in the terrain) and I didn't realize particle textures need to be square, but it's mostly there. Took me about a week (mixed in with lots of work on my "vacation"), mostly tweaking the flying motion.

It uses 70:30's "Flatland" skybox assets, a very heavily modified terrain generator based on this post, and a modified version of Ryan's Shapeways Zardoz model, which he gave me permission to use for this purpose...