[Bf-cycles] Please Give Us Back Volume&Surface Combos

[Michael Fox]

i understand from his other commits, its to make the nodes compatible 
with Blender internal, which is shooting ourselves in foot, after all 
how can other renders make their own nodes or use the render api if they 
have to be compatible with blender internal. From what i can gather the 
new workflow will be you say in object properties, this is a volume 
object with no surface, or this is a surface object so don't do surfaces 
that kind of thing, which will not allow surfaced volumes like i made here

http://pasteall.org/pic/show.php?id=18952
<left to right, volume+transparent, glass, translucent>

They were all made using nodes, adding gloss on top of another shader, i 
think what Brecht has in mind is fire and smoke, so it works with 
current way of rendering smoke, but is not realising volumetric shaders 
are used so much more then smoke and fire