The issue is that object A (the solder mask aperture object) can
bridge objects B and C which have different nets. Since we only do
object-to-object compares we don't find this. By allowing object A
to inherit the first net it collides with (either object B's or
object C's), we'll generate a violation with the second collision.
Fixes https://gitlab.com/kicad/code/kicad/issues/10189
1) Don't plot all footprint texts for each footprint graphic item.
2) Enforce min web thickness around board shapes and board text.
3) Enforce min web thickness around footprint shapes
4) Correctly handle multi-layer zones.
(1) and (4) will get cherry-picked back to 6.0, so after rebasing
won't actually appear in this changelist anymore....
Seth Hillbrand
Jeff Young
Marek Roszko
Ian McInerney