[Bf-funboard] Remove doubles issue & use for UV

[Julio Iglesias]

> This way you can control that you are merging the existing verts into
> other-unselected verts, and that the verts should not me merged with
> each-other.

Not sure if I understood it right... what would happen in this situation?:

https://dl.dropbox.com/u/2294713/rdsu.png

If I want to merge selected to A, but there is the same distance to B

> For UV's it'd need to be an option for welding, but shouldnt be so hard to add.

Sounds good! Something like Limit in Stitch?