CURLOPT_TLSAUTH_TYPE(3) on macOS

The text ff6b32e91786, as macOS 10.12.5, macOS 10.12.4, macOS 10.12.3, macOS 10.12.2, macOS 10.12.1, macOS 10.12 shipped it.

set TLS authentication methods

CURLOPT_TLSAUTH_TYPE(3) on macOS now