HV-905 Providing a global config for auto unwrapping

An early attempt. Any thoughts on the direction?
> Hehe, yes. A heated debate every now and then keeps up the spirit :)

I think it is good that we talk to much about it. This is new stuff and from the more angles we look at this the better. It will be good for whatever ends up in HV and it will prepare us for the discussion in the BV expert group.


>> Keep it stupid simple, which for me translate to: @UnwrapValidatedValue present ? unwrap, else, do not unwrap.

Wise words indeed. In fact that was my initial feel about this and also a reason why I was not so keen on the global option. I think this option is for sure not the worst, if not even the best.