[ANNOUNCE] auth request module

[Maxim Dounin]

Hello!

Here is auth request module, it allows authorization based on 
subrequest result.  It works at access phase and therefore may be 
nicely combined with other access modules (access, auth_basic) via 
satisfy directive.

Example usage:

    location /private/ {
        auth_request /auth;
        ...
    }

    location = /auth {
        proxy_pass ...
        proxy_set_header X-Original-Uri $request_uri;
        ...
    }

To allow access backend should return 200, to disable - 401/403.  

Further info is here:

http://mdounin.ru/hg/ngx_http_auth_request_module/
http://mdounin.ru/files/ngx_http_auth_request-0.1.tar.gz

MD5 (ngx_http_auth_request-0.1.tar.gz) = c0ed1610097017813e6468e7cca28af7
SHA256 (ngx_http_auth_request-0.1.tar.gz) = ccaafc2afa4b4c98dc2b7555fc61774cfbd4f98edca87eb172ae3ec36a49f263

Maxim Dounin