Top and bottom faces of lightning rods are not culled by adjacent blocks

(nobody reported this one yet?)

The bug

The top and bottom faces of lighting rods do not have "cullface" specified in their models. As a result, when these faces are fully occluded by an opaque block, they do not get culled even though they should.

How to fix

This can be fixed simply by adding the appropriate cullface parameters to the model. Fixed such models are attached to this ticket.