Misc Gnus fixes by Lars Magne Ingebrigtsen <larsi@gnus.org>.

Misc Gnus fixes by Lars Magne Ingebrigtsen <larsi@gnus.org>.

2010-08-28  Lars Magne Ingebrigtsen  <larsi@gnus.org>
 * gnus.el (gnus-valid-select-methods): Remove reference to nngoogle,
 which doesn't exist.

 * message.el (message-inhibit-ecomplete): New variable to allow some
 function to inhibit ecomplete address storage.
 (message-resend): Disable ecomplete message storage when resending
 messages.

 * nntp.el (nntp-async-kluge): Remove the Emacs 20.3-related kluge.