#16 curlftpfs errors with libcurl ≥ 8.17.0

[Adam Harvey]

libcurl 8.17.0 dropped support for Kerberos FTP, which results in the curl_easy_setopt_or_die(..., CURLOPT_KRB4LEVEL, ...) call failing with an inscrutable message.

The attached patch checks the libcurl version and errors if the krb4 mount option is set and libcurl is too new.

[Chris Vine]

Is there something missing in your patch? When applied to the stock curlftpfs-0.9.2 tarball, compilation fails with CURLFTPFS_NO_KRB_SUPPORT undeclared.

[Adam Harvey]

Sorry, you're right. Definite rust on my end in terms of generating partial patches out of source trees.

Fixed patch attached.

[Daniel Bedrenko]

Adam, thank you for the updated patch. It applies cleanly and solved the error I was getting when connecting to the FTP server on my Original Xbox