Use def-kom-command when possible, made some code more robust,
Added utilities file and moved certain functions there.
Removed lots of emacs 18 compatibility. This type of code will have to go into
special compatibility files later on.
Got rid of all the compiler warnings I could.
Other minor changes (see ChangeLog)

vissa texter.

server call. New names variable names in filter-edit.el.

på inloggningsfasen

Anonymous texts handled
Cleaned up use of kom-buffer and lyskom-buffer
Added Show User Area and Change Conference Type commands

Added group message handling.
Rewrote filtering to compile filter specifications to lisp functions.
Added URL recognition in text bodies.
Fixed some minor bugs.