explicitly. OK dlg@ & todd@

Prodded by jmc@.

General huzzahs.
"go for it" deraadt@

disklabel the "HP C3010 / Cranel 2.0GB Fast SCSI2 H10" crammed inside your
palm device, but that's the price of progress.  hopefully i didn't whack
anything important.
ok deraadt

ok todd@ krw@ deraadt@

get it in! jsing@

ok miod@, deraadt@, todd@.

ok deraadt

armish, landisk and zaurus. Also fix corresponding .Xr in MAKEDEV.8
ok miod@, todd@

since we perhaps cannot assume that is what kernels will be in the
pathetically stupid world that SGI created

build the sets before we build the media.  While there we can get rid
of DESTDIR/snapshot too, and simply install straight into RELEASEDIR.
(This also ends up saving an astounding amount of traffic/latency in a nfs
environment)

all-in-one usb card readers and memory sticks you run out of sd
device files very quickly with default install.
This doesn't affect install media.
ok krw@ miod@

"Special purpose devices" section, since a hardware driver which uses
video(4) also could be none-USB as long it uses the V4L2 API.
OK todd@

get it in, deraadt@

ok deraadt@, marco@

please commit from deraadt@

make the installation media's life easier:
- stop using ``Pc'' as a getty terminal type, use std.9600 instead.
- on platforms with multiple virtual consoles (alpha, amd64, i386,
zaurus), console is disabled, various ttyC* are enabled.
- on other platforms, console is enabled, all other devices are
disabled. This only changes armish, mac68k, sgi.
- default terminal for console is unknown on serial-only machines, vt220
on glass-capable machines (questionable, but done for consistency).
- minor whitespace changes.
- glass console forgotten on a couple platforms (luna88k, sparc64, vax).
eyeballed by deraadt@, ok krw@