Use platform versions in getSwift57Availability.
Use platform versions in getSwift57Availability.

glessard/swift,benlangmuir/swift,glessard/swift,roambotics/swift,glessard/swift,benlangmuir/swift,apple/swift,roambotics/swift,JGiola/swift,benlangmuir/swift,roambotics/swift,apple/swift,roambotics/swift,apple/swift,JGiola/swift,JGiola/swift,roambotics/swift,benlangmuir/swift,apple/swift,JGiola/swift,glessard/swift,apple/swift,benlangmuir/swift,JGiola/swift,roambotics/swift,JGiola/swift,benlangmuir/swift,apple/swift,glessard/swift,glessard/swift