(not a bug, possible feature addition, in response to Fry's status message)

For instance, if drawing GUI elements on top of a lit scene, might want to turn off
lights halfway through draw() when creating the GUI geometry. Currently can fake
this with "g.lightCount=0;", just wondering if you'd want something like "noLights()"
in the api.

sure, i've added it in there for 0134, since it's also necessary to call
flush() so that geometry gets pushed out based on the current lighting
situation. we had wanted to keep things simple and leave it out, but i
don't want "g.lightCount = 0" to be the norm, especially when that will
break depth sorting.