Missing servers:

	xmds		wmds		mmds		mdsx
	mdsw		mdsm		hwgamma		swgamma
	hwcursor	swcursor	cursorgamma	coopgamma
	host		remote		fb		kbd
	keytrans	kkbdrate	rat		compositor
	crtc		seat		dri		drag
	cursorshadow	kill		focus		colour
	state		screensaver

Extra servers:

	kbdbind		ratbind		gestures	dcvs
	decorator	tile		stack		workspace
	tray		retro-crt	kbd2rat		multikey
	iclipboard	keystick	idrag		posmem
	nest		mds

Missing commands:

	reg		clip		screenshot	slay
	chvt
	conf		Command line interface for reconfiguring servers

Missing protocols:

	drag		kkbdrate  	keytrans	multikey
	rat		cursor		colour		state
	focus		screensaver	compositor	crtc
	presentation	network		decorator	workspace
	embed		Embedding windows inside other windows such as a status icon tray


Need testing:

	registry
	clipboard
	kkbd
	kkbd, on a SPARC
	vt

errno is defined as a error_t {typedef of int} on Hurd, use this convention
Fast lanes
Optimise use of mutexe by replace them with rwlocks
Listen for `Command: reregister`
Register protocols
Make it possible to forbid unauthorised servers for listening, needed for secure password fields
  I guess we can let servers create their own abstract sockets, report them to mdsinitrc and
  let mdsinitrc export appropriate environment variables.
A facility is needed to lookup available compose sequences to any character,
  it would be useful in character map programs so one can easier learn the
  compose sequences for character that one uses often
Servers should be stored in LIBEXECDIR.
Implement reconnect_to_display()

src/libmdsserver/config.h should be sed:ed rather than use #ifndef