curl_version_info(3) on macOS

The text 1614915302b7, as OS X 10.11.6, OS X 10.11.5, OS X 10.11.4, OS X 10.11.3, OS X 10.11.2, OS X 10.11.1, OS X 10.11, OS X 10.10.5 shipped it.

returns run-time libcurl version info

curl_version_info(3) on macOS now