Cycles / Fresnel Node:
* Add a "Normal" Input to the Fresnel node.
* Fix for the Fresnel GLSL code (normalize the Incoming vector).

Patch #37384 by Philipp Oeser (lichtwerk) , thanks! 

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk@61209 954f8c5b-7b00-dc11-b283-0030488c597c