CURLOPT_COOKIEJAR(3) on macOS

The text d25beac652da, 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.

file name to store cookies to

CURLOPT_COOKIEJAR(3) on macOS now