This changes the highlighting code to highlight the map geometry of an object
instead of it's geometry when highlighting a mapped object.
While doing that, I also simplified the highlighting code a bit, more
specifically, removed the unused PADDING option.
This wasn't really a public header. It exposed a lot of stuff it shouldn't have and it was just confusing.
We'll just create a public header when we'll be ready, i.e know
exactly what we need to expose.
SVN revision: 83492