CURLOPT_COOKIESESSION(3) on macOS

The text cbc7b6093c24, 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.

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CURLOPT_COOKIESESSION(3) on macOS now