CURLOPT_TIMECONDITION(3) on macOS

The text d57ce890d80a, 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.

select condition for a time request

CURLOPT_TIMECONDITION(3) on macOS now