Blender Git Loki

Depsgraph/Layers: Keep original visibility when doing full scene copy

Originally we were not respecting the original visibility flags of the
collections. However this is required for Copy-on-write (CoW).

Remember to update the svn lib tests folder. I had to update some of the
json files there.

Also adding a new unittest for this particular issue:
Test render_layer_scene_copy_f