* More fixes, replaced all remaining size variables with scale ones.
* Remove nonzero check in OSL textures, not needed anymore, was there to prevent division by zero for the size variable.
* More fixes for r41599, removed clouds and distorted noise textures and ported the Noise texture to OSL.
ToDo: Color output is still commented, needs a closer look.
* Some more fixes (comments, uninitialized variables)