[spray-cvs] CVS update: Lisp/steven/raytracer/box-primitive.lisp Lisp/steven/raytracer/diffuse-phong-material.lisp Lisp/steven/raytracer/fresnel-material.lisp Lisp/steven/raytracer/hit.lisp Lisp/steven/raytracer/illum.lisp Lisp/steven/raytracer/image-texture.lisp Lisp/steven/raytracer/imago-utils.lisp Lisp/steven/raytracer/light.lisp Lisp/steven/raytracer/main.lisp Lisp/steven/raytracer/material.lisp Lisp/steven/raytracer/medium.lisp Lisp/steven/raytracer/model.lisp Lisp/steven/raytracer/packages.lisp Lisp/