Prerequisite Groups to accept any unit type

[Marshall]

Linked to Issue 265 (creation of additional Prerequisite Groups)

Would be nice if the Prerequisite Groups (PrerequisitePower=, etc) could take any BuildingType or VehicleType (any unit type would be better but VehicleTypes are the most important because you can have a vehicle that deploys into a building and are considered by the player to be one and the same)

This, of course, would have the side-effect of doing away with the need for PrerequisiteProcAlternate (although the existence of this flag in itself suggests that allowing Prerequisite Groups to take VehicleTypes is a lot harder to implement).

[Renegade (renegade)]

Severity -> feature. RTFM.