Cycles:
* Change the default Light Path settings.

* Diffuse/Glossy bounces are now set to 4, to give a bit faster renders in default scenes. More bounces are often not needed (especially in animation). 
* Transmission bounces have been increased to 12, to not run into problems with dark glass too quickly. 
* Max/Min bounces are now 12/3. 

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk@61044 954f8c5b-7b00-dc11-b283-0030488c597c