Deprecate standard cookie authentication
According to Tor [[https://gitweb.torproject.org/torspec.git/tree/control-spec.txt|specs]], cookie authentication is deprecated:
the COOKIE authentication method has been deprecated and will be removed from a future version of Tor.
Now standard applications such as tor-browser and stem/Nyx use safecookie mechanism. If somebody needs to authenticate with safecookie at commandline, it can be done [[https://trac.torproject.org/projects/tor/ticket/28295#comment:7|too]].
As intermediate step before complete removal of standard cookie authentication I suggest to add a
torrc option which disables it by default (e.g.
DisableStandardCookieAuthentication 1). If some old application still needs it, this option can be changed to 0.
It was discussed [[https://trac.torproject.org/projects/tor/ticket/28295#comment:7|here]] in relation to Nyx.