Major code cleanup.

I have made lots of changes, including transitioning most data
structures to use def-komtype, removing functions that weren't used
(there are several left), removing almost all the remaining who-buffer
remnants and generally messing with things.

Chances are I broke something. I haven't figured out what yet, but do
let me know if you spot anything.


Detailed changes:
> 	* I have cleaned up all over the place. There are no ChangeLog
> 	entries for most of the changes. Changes include: converting types
> 	to use def-komtype; removing who-buffer code; removing who-info
> 	cache; removing dead code; removing commented-out code.
>
> 	* mship-edit.el (lp--hide-memberships-by-date): Call
> 	lyskom-read-date.
>
> 	Code cleanup:
> 	* prefetch.el (lyskom-prefetch-whobuffer-handler): Commented out
> 	the code since thw who buffer is gone.
>
> 	* commands2.el (kom-bury): Removed who-buffer code.
>
> 	* cache.el: Removed who-info cache.
>
> 	* async.el (lyskom-parse-async): Removed who-buffer code.
> 	(lyskom-parse-async): Don't cache who info.
>
> 	* filter-edit.el (filter-entry): Redefined using def-komtype.
>
> 	* komtypes.el (conf-no-list): Redefined using def-komtype.
>
> 	* prioritize.el (prioritize-entry): Redefined using def-komtype.
>
> 	* clienttypes.el: Removed format-props and who-buffer-related
> 	types.
>
> 	* lyskom-rest.el (lyskom-format-aux-help): Removed something about
> 	format-props, which aren't used anywhere.
>
> 	* komtypes.el,deferred-insert.el,clienttypes.el,mship-edit.el,names.el,
> 	regexp.el,tree-edit.el: Rewrote all uses of def-komtype. Defined
> 	more datatypes using def-komtype. Removed unused functions.
>
> 	* clienttypes.el (format-state): Renamed argl to args, since
> 	that's what we actually use.
> 	(format-state): Converted to new def-komtype syntax.
>
> 	* lyskom-rest.el (lyskom-membership-highest-index): Unused.
> 	Removed.
>
> 	* komtypes.el (def-komtype): Added support for &optional in the
> 	arg list and for default values.
> 	(privs): Re-implemented with def-komtype.
> 	(pers-stat): Ditto.
> 	(text-stat): Ditto.
> 	(conf-stat): Ditto.
> 	(flags): Ditto.
> 	(map): Ditto.
> 	(membership): Ditto.
> 	(conf-list): Ditto.
> 	(text): Ditto.
> 	(misc-info): Ditto.
> 	(mark): Ditto.
> 	(lyskom-create-who-info): Ditto.
> 	(session-info): Ditto.
> 	(conf-type): Ditto.
> 	(server-info): Ditto.
> 	(version-info): Ditto.
> 	(conf-z-info-list): Ditto.
>
> 	* deferred-insert.el (defer-info): Re-implemented with
> 	def-komtype.
>
> 	* language.el (lyskom-string-check-category): Unused. Removed.
>
> 	* async.el (lyskom-show-changed-person): Unused. Removed.
>
> 	* utilities.el (lyskom-set-face-foreground): Unused. Removed.
> 	(lyskom-set-face-background): Unused. Removed.
>
> 	* lyskom-buttons.el (lyskom-set-default-button-action): Unused.
> 	Removed.
>
> 	* startup.el (lyskom-print-name): Unused. Removed.
>
> 	* lyskom-buttons.el (lyskom-menu-selection): Unused. Removed.
>
> 	* aux-items.el (lyskom-map-aux-items): Unused. Removed.
>
> 	* view-text.el (lyskom-fetch-author-for-cache): Unused. Removed.
>
> 	* utilities.el (lyskom-emacs-version): Unused. Removed.
>
> 	* view-text.el (lyskom-fetch-text-for-cache): Unused. Removed.
>
> 	* utilities.el (lyskom-face-resource): Unused. Removed.
> 	(lyskom-modify-face): Unused. Removed.
>
> 	* startup.el (lyskom-extract-persons): Unused. Removed.
> 	(lyskom-extract-confs): Unused. Removed.
> 	(lyskom-do-extract-persons-or-confs): Unused. Removed.
>
> 	* edit-text.el (lyskom-edit-goto-char): Unused. Removed.
> 	(lyskom-edit-on-aux-item): Unused. Removed.
>
> 	* utilities.el (lyskom-background-mode): Unused. Removed.
>