qmail-hashdir: Stuff still to be done,

 - Documentation:
	Not happy with this at present, esp. mention of the alias user
	and the hash user - since these may be the same user.  I should
	be able to clarify this somehow...
 - Installation procedure:
	I'd like to have DJB-style conf- files. If I get plenty of free
	time, this could be an option. Don't hold your breath though.
