Minor flipper collision cleanup.


git-svn-id: svn://svn.code.sf.net/p/vpinball/code/trunk@967 14438d79-0ffd-4333-8ae7-ea2bdd901387
Light map now only applies to top of wall, not sides.

This fixes ugly dark streaks on many billboard ramps.


git-svn-id: svn://svn.code.sf.net/p/vpinball/code/trunk@968 14438d79-0ffd-4333-8ae7-ea2bdd901387
Made render states more consistent for walls.


git-svn-id: svn://svn.code.sf.net/p/vpinball/code/trunk@969 14438d79-0ffd-4333-8ae7-ea2bdd901387