Remove unused vars `state' and `desired-len'.
(socks-parse-services, socks-nslookup-host): Use with-current-buffer.
(socks-wait-for-state-change): Use new-style backquotes.
(top): Update Copyright. Don't load cl.el.
(all): Replace `case' by `cond', `string-to-int' by
`string-to-number', and `process-kill-without-query' by
`set-process-query-on-exit-flag'.
(socks-char-int): Remove defalias and all occurencies.
