Feature request for all paint systems that support it: Jittering in
absolute coordinates. This allows an artist to lower the brush radius
while keeping the spread of the brush constant. A toggle under the
jitter slider provides the option to switch between relative/absolute.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@55180 954f8c5b-7b00-dc11-b283-0030488c597c