If there aren't any providers configured, then just decline allowing other...

- Determine if setting the AUTHZ_PROVIDER_NAME_NOTE note

   is even necessary.  This was used in authn to support

   authn_alias.  Is there a need for an authz_alias?

- Remove the Satisfy directive and replace it with the

X- Remove the Satisfy directive functionality and replace it with the

   <RequireAll>, <RequireOne> directives

- Remove the Satisfy directive 

X- Implement the <RequireAll> <RequireOne> block directives

   to handle the 'and' and 'or' logic for authorization.

X- Remove the AuthzXXXAuthoritative directives from all of

   if the argument is true

X- Fold the Reject directive into the <RequireAll> <RequireOne>

   logic

- Reimplement the host based authorization 'allow', 'deny'

X- Reimplement the host based authorization 'allow', 'deny'

   and 'order' as authz providers   

X- Remove the 'allow', 'deny' and 'order' directives      

*/

typedef struct provider_alias_rec {

    if (!conf->providers) {

        ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,

                      "no authorization providers configured");

        return HTTP_UNAUTHORIZED;

        return DECLINED;

    }

    current_provider = conf->providers;