Blender Git Loki

Object Mode: Outlines: Add support for thicker outline

Base outline is 2px wide (because of how we detect them).
And since inflating this outline will only produce outlines that are 2*x
thick we map the UI scalling and the outline width setting to the closest
match.

Do note that thicker outlines have a performance cost since they need more
texture fetches and passes.

This fixes T60252 3D View Outline Width not working