Allow SwiftFoundation to declare NSObject, too
Allow SwiftFoundation to declare NSObject, too

Fixes rdar://86495060.

apple/swift,roambotics/swift,glessard/swift,gregomni/swift,ahoppen/swift,glessard/swift,atrick/swift,JGiola/swift,apple/swift,glessard/swift,apple/swift,apple/swift,JGiola/swift,benlangmuir/swift,rudkx/swift,atrick/swift,benlangmuir/swift,apple/swift,roambotics/swift,rudkx/swift,benlangmuir/swift,roambotics/swift,JGiola/swift,gregomni/swift,atrick/swift,atrick/swift,rudkx/swift,JGiola/swift,benlangmuir/swift,roambotics/swift,roambotics/swift,ahoppen/swift,ahoppen/swift,atrick/swift,gregomni/swift,JGiola/swift,benlangmuir/swift,rudkx/swift,benlangmuir/swift,glessard/swift,ahoppen/swift,atrick/swift,glessard/swift,gregomni/swift,rudkx/swift,gregomni/swift,apple/swift,JGiola/swift,roambotics/swift,ahoppen/swift,gregomni/swift,glessard/swift,rudkx/swift,ahoppen/swift