OpenScad Surface Solids 1.1

The previous incarnations of the library have been good for laying down generic Bezier surfaces, but it was very picky when it came to actually turning them into .stl files that are printable.

This thing will more readily turn your surfaces into .stl files. It makes a modification to the Renderer.scad file. Specifically, the DisplayQuadShards() routine. It now takes an array which tells it which of the 'edge' faces to generate.

Thus, instead of generating all the triangles as polyhedra,