Super GLSL

This is the initial beta release of our SuperGLSL plugin.

This patch is planned to be a very large modification to the way GLSL works in QC. Ultimately it will allow for dynamic shaders and other fun tricks, but for now it simply allows you to change GLSL parameters per-object (instead of per-glsl patch, applied to all sub-objects).

For now, it's just the GLSL Grid, though we plan on creating patches for a few more primitives.

Thanks to toneburst for prodding me into designing and finishing this initial step amid all the other stuff I have going on ;)