Support (and use) UTC time format in the protocol.

Detailed changes:
> 	Support UTC time in the server:
> 	* startup.el (lyskom): Select UTC time format if the server
> 	supports it.
>
> 	* utilities.el (lyskom-set-connection-format): New function.
>
> 	* parse.el (lyskom-parse-time): Use lyskom-create-time-from-utc.
> 	Convert day-of-year to starting from one.
> 	(lyskom-init-parse): Add the parse buffer as a child of the main
> 	buffer so UTC setting is propagated to it.
>
> 	* komtypes.el (lyskom-create-time-from-utc): Simplified. It seems
> 	that the right thing to do is pass zero in TZ to encode-time. This
> 	should speed things up slightly in normal cases. Handle case when
> 	server does not use UTC.
>
> 	* services.el: (initiate-get-last-text): Commented out since we
> 	can't convert local time to UTC, which this function requires.
>