Minor improvements/cleaning up warnings
Better GUIMaterials system

Two materials -- a static non-animated material for easy use, and a
material that interpolates the color, size, and rotation based on a
uniform value so that the element can be tweened
Other minor fixes (warnings, new noise type in NoiseTest)
Updated camera to optionally roll the "up" vector
Forgot to commit some files from last commit
Better planet generation material
Forgot some other files from "Updated camera..." commit
God dammit, more files from "Updated camera..." commit
PlanetSimWorldGen now uses DiamondSquare/cubemapped terrain