allow health analyzer upgrades to be combined with prodoc cybereyes

[Noah Buttes]

at this point there's no point in getting a cybereye because it can't accept the health analyzer upgrade, and you're better off with glasses which doesn't make very much sense. you should be able to combine the two so you don't have removable glasses and when you inspect people you get the full shabang

It makes sense because you can wear sunglasses over a cybereye, which is a huge advantage.