Daemon mode wishlist

[Romain Francoise]

The new daemon mode is neat but it's not really useful for me
because there's no way to customize the socket name, it always uses
the default 'server' socket.  --daemon is processed before --eval so
I can't change it with --eval '(setq server-name "foo")' as the
preload-emacs script does.

Ideally emacs would have a -S option to set the session/socket name
and emacsclient would have switches to list the available sessions
and select one, like screen does.