redefine vnd.curl media types according to their documentation at

    http://developers.curl.com/docs/DOC-1126

instead of following their bone-headed IANA registrations.

PR: 43135


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@739649 13f79535-47bb-0310-9956-ffa450edef68