Check if cURL supports the desired features #16269
Merged
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Older versions of cURL that are unfortunately still bundled by distributors don't support these features which will result in errors and other possibly unpredictable behaviour.
Fixes #16179 for master – stable8 requires another patch. This is the same approach as I used for SabreDAV in sabre-io/http@59179fd
cc @MorrisJobke @nickvergessen Please review and test.