parameter substitution.
ok todd@

OK deraadt@ and fgsch@

ok drahn@, deraadt@

committed from the ship while drinking a trad, from a zaurus on beck's birthday

Main features:
- MI hil drivers, allowing live plug/unplug of devices, and the keyboard
does not need to be at id 1 anymore.
- SGC bus support on 4xx models. SGC frame buffers are supported too, but
not as console, though you can use them as a regular glass terminal if
you run a getty on ttyC0. Currently not compiled-in, awaiting for an sti(4)
fix to be commited.
- HP-UX compatibility interfaces are removed. grfinfo and hilinfo are removed.
X11 support is currently broken by these changes; X.org X11R6 support will
be available very soon.
Tested on hyperion and 4 different flavours of catseye/topcat/kathmandu; other,
older frame buffers (davinci, gatorbox and renaissance) could not been tested
but should work; please report any regression.

same rules to both wskbd0:wskbd and wsmouse0:wsmouse; miod ok

- sync the comments in /etc/security
ok millert@

ok pascoe@ mpf@

OK deraadt@

from joel knight;
ok hshoexer@;

the / -> /altroot copy.  OK deraadt@

*** please update /etc/netstart and test if it works ok for you ***

compiled in, but one disabled, and use config -e to swap them and build
the other kernels; saves valuable compile time.
Add ramdisks into the build (at release time). Since we are moving to a
bsd.rd installation, it is not necessary to put kernels in .tgz files
anymore, so don't bother, and adjust installation script sets information
accordingly.

ok deraadt@

via mixerctl.conf.
ok deraadt@, earlier version ok henning@

ok otto@

to an interface; no change in default config
from Toni Mueller <support@oeko.net>, ja ja ja ja bob

by form@pdp-11.org.ru.
ok todd@ henning@