Cycles / Preview render:
* Hair strands were too thin in preview, after addition of "radius_scale" property in r56072.
Increased the scale from 0.01 to 0.03 now. 

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56498 954f8c5b-7b00-dc11-b283-0030488c597c