Bump liberty, enable TLS SNI

Involves some rewrites to fit the new APIs.

SNI has been implemented Mostly just because we can, I don't think it's
widely in use and kike doesn't support this feature of the protocol either.

zyklonb.c

@@ -1663,8 +1663,10 @@ struct irc_socks_data
 };
 
 static void
-irc_on_socks_connected (void *user_data, int socket)
+irc_on_socks_connected (void *user_data, int socket, const char *hostname)
 {
+	(void) hostname;
+
 	struct irc_socks_data *data = user_data;
 	data->ctx->irc_fd = socket;
 	data->succeeded = true;