Cycles / Toon BSDF:
* Added a toon bsdf node to Cycles. This was already available as OSL only closure, but is now available inside the SVM backed as well, for CPU and GPU rendering. 
* There are 2 variations available, diffuse and glossy toon, selectable via a menu inside the node. 

Documentation:
http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/Shaders#Toon

Example render & blend file:
http://www.pasteall.org/pic/show.php?id=51970
http://www.pasteall.org/blend/21579

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56980 954f8c5b-7b00-dc11-b283-0030488c597c