HEADSUP: kbdmux(4) is in the tree

Dear Hackers,

this is just a quick headsup on kbdmux(4). as of now it has been 
committed to both HEAD and RELENG_6 (much thanks to re_at_ for turning this 
around quickly). kbdcontrol(1) utility was enhanced and now knows how to 
add/remove keyboards to/from kbdmux(4).

kbdmux(4) was _not_ made the default yet. there are still a few unsolved 
issues:

1) using kbdmux(4) with atkbd(4) and psm(4) mouse sometimes locks up my 
system (Dell laptop). so far i was not able to track it down. for now i 
just use ums(4) mouse.

2) using kbdmux(4) with atkbd(4) and ukbd(4) sometimes lead to keyboard 
state corruption. the easiest way to reproduce this is to hit keys on 
both keyboards really fast in xterm. switching between X/console fixes 
the keyboard state.

3) kbdmux(4) fails The Warner test.

<quote>
	Press control on kbd0
	Press control on kbd1
	C				should produce ^C
	Release control on kbd0
	D				should produce ^D
	release control on kbd1
	E				should produce E.
</quote>

i will try to track these issues down and fix them. in the mean time 
please give kbdmux(4) a try (if you have interest/time/hardware).

thanks,
max