s/reqest/request/, s/requst/request/ and s/reuqest/request/ in comments.

fix various typos in comments and log messages.

Merge thorpej-cfargs2.

Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass a

Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

show more ...

Remove some diagnostic/debug messages.

Drop unused (inline) function.

split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

Don't set the iobase and iosize members of pcmciabus_attach_args because
they're not used in any meaningful way.

convert the remaining dev/sbus drivers to CFATTACH_DECL_NEW, cfdata_t
and device_t, including the pci frontend and backend for en(4).

u_intNN_t -> uintNN_t

- use device_private(), proper types and variables for device_t/softc
- remove unnecessary casts against void pointer

XXX: many inconsistent use of aprint_*(9) and printf(9)

Remove struct sbusdev and related functions sbus_establish() and sbusreset().
They are derived from 4.4BSD/sparc and have been there since initial import
of NetBSD/sparc in 1993, but the struct sbusd

Remove struct sbusdev and related functions sbus_establish() and sbusreset().
They are derived from 4.4BSD/sparc and have been there since initial import
of NetBSD/sparc in 1993, but the struct sbusdev is almost unused for years,
nothing calls sbusreset(), and all (*sd->sd_reset)() functions look bogus.

Suggested by mrg@ and martin@, and tested on SS1+ and SS20.

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struct device * -> device_t, no functional changes intended.

struct cfdata * -> cfdata_t, no functional changes intended.

ANSIfy functions with function-pointer arguments

ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

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replace bitmask_snprintf(9) with snprintb(3)

Remove clause 3 and 4 from TNF licenses

use aprint_*_dev and device_xname

With the new IPL world, things are easier for us: if we can get the
nell hardware interrupt handler run at IPL_VM, we can call the socket
drivers interrupt handler directly.
This is always possible o

With the new IPL world, things are easier for us: if we can get the
nell hardware interrupt handler run at IPL_VM, we can call the socket
drivers interrupt handler directly.
This is always possible on sparc64, but on sparc we might have to fall
back to the old softint bounce. Since this uses arbitrary IPLs, we
can not use the new softint_* for this - we'll have to use the old
sparc_softintr_* functions.

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machine/{bus,cpu,intr}.h -> sys/{bus,cpu,intr}.h

Use the softint API.

Merge some of the less invasive changes from the vmlocking branch:

- kthread, callout, devsw API changes
- select()/poll() improvements
- miscellaneous MT safety improvements

Add an explicit NULL for the card_detect function (that we don't have/need)
in struct pcmcia_chip_functions {}.
This now compiles again (adding -Wextra exposed this).

OK martin@.