made fatalError() drop-in replacement internal (instead of public)
made fatalError() drop-in replacement internal (instead of public)

alex-vasenin/SwiftAA,onekiloparsec/SwiftAA,onekiloparsec/SwiftAA,alex-vasenin/SwiftAA,alex-vasenin/SwiftAA,alex-vasenin/SwiftAA,onekiloparsec/SwiftAA,onekiloparsec/SwiftAA,alex-vasenin/SwiftAA,onekiloparsec/SwiftAA