[z-machine] Different 1.1 proposal: put_prop and get_prop

[David Kinder]

> The ZIP behavior matches the Infocom behavior, so IMO it should remain 
> illegal.

I'd agree with this. It doesn't seem quite right to change the meaning
of those opcodes from "get and set the property" to "get and set the
property, or only the first bit of it" just because Inform can generate
such situations.

> Do any story files out there actually try to do this?

I don't think so.

David