First pass at removing clauses 3 and 4 from NetBSD licenses.

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code t

First pass at removing clauses 3 and 4 from NetBSD licenses.

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.

OK deraadt@

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convert to new .Dd format;

kill default locators

Incomplete section 4 mi manual page cleanup.
- make configuration lines match GENERIC files
- more Xr (hopefully usefule Xr)
- never mention intro(4) on non-physical devices (i.e. protocols), always

Incomplete section 4 mi manual page cleanup.
- make configuration lines match GENERIC files
- more Xr (hopefully usefule Xr)
- never mention intro(4) on non-physical devices (i.e. protocols), always
mention it for physical devices
- random text style and quoting fixes
- drivers ported from FreeBSD did mention rc.conf instead of hostname.if as
the place to put mediaopt
- some .Tn UNIX -> .Ox replacements
- etc, etc...

reviewd in part by deraadt@ (until he got bored of this)

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o) remove unnecessary .Pp;
o) remove unnecessary .Nm args;
o) closes .Bl;
o) .Sh AUTHOR -> .Sh AUTHORS;
o) sort SEE ALSO;
o) better -mdoc style;
o) typos;

aaron@ ok.

We aren't NetBSD.

driver for the databook isa/pcmcia bridge (commented out in GENERIC for now);
from NetBSD.