MANUAL: clarified user+password in HTTP URLs

   ones out of the ones that the server accepts for the given URL, by using

   --anyauth.

   NOTE! Since HTTP URLs don't support user and password, you can't use that

   style when using Curl via a proxy. You _must_ use the -u style fetch

   during such circumstances.

   NOTE! According to the URL specification, HTTP URLs can not contain a user

   and password, so that style will not work when using curl via a proxy, even

   though curl allows it at other times. When using a proxy, you _must_ use

   the -u style for user and password.

 HTTPS