Log Message:
Update to 4.0.  In addition to new/updated translation and bugfixes:

	* Core changes:
		* The mail summary popup has been replaced by
		  libnotify message popups. These new message popups
		  also provide actions such as "Open" and "Mark as Spam"
		* Mozilla products (Mozilla, SeaMonkey, Thunderbird, ...)
		  mailboxes are now supported
		* The mailbox properties dialog has been redesigned
		* A new click action has been added: open the latest
		  message
		* A MN icon set has been designed by Josef Vybíral
		  (#18198)
		* A --print-summary command line argument has been
		  added, allowing to access message data from an
		  external program
		* A mail-changed GConf command setting has been added
		  (it is executed when new mail is received or when a
		  message is read)
		* Handling of the GNOME mail reader command: instead
		  of stripping %s, the first word of the command is
		  now used; moreover, mozilla and evolution are now
		  handled specially (#18257)
		* The /desktop/gnome/url-handlers/mailto/needs_terminal
		  GConf key is now respected
		* Could no longer close the about dialog with recent
		  GTK+ versions: fixed (#18252)

	* POP3 changes:
		* Messages kept on the server but marked as read are
		  now discarded. Note that this only works with
		  servers which send Status headers; most don't
		  (#18164).