Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)

branches: 1.15.16;
Print error codes from sysmon

Fix queue handling to make the watchdog timer actually works on
netbsd-7 if it is configured by wdogctl=YES in rc.conf, and also
avoid a hangup duaring shutdown.

- don't put an entry which is already in the queue.
- read a first entry properly to handle the queue.
- check the lom status if input buffer is empty before writing.

branches: 1.13.4; 1.13.6;
Ensure that the top level sysctl nodes (kern, vfs, net, ...) exist before
the sysctl link sets are processed, and remove redundancy.

Shaves >13kB off of an amd64 GENERIC, not to mention >1k duplicate
lines of code.

Don't use conditional format strings, if they aren't equivalent in the
arguments they use.

branches: 1.11.2;
Fix typo in KASSERT, pointed out by riastradh@ and martin@.

branches: 1.10.2;
Add some pre-processor magic to verify that the type of the data item
passed to sysctl_createv() actually matches the declared type for
the item itself.
In the places where the caller specifies a function and a structure
address (typically the 'softc') an explicit (void *) cast is now needed.
Fixes bugs in sys/dev/acpi/asus_acpi.c sys/dev/bluetooth/bcsp.c
sys/kern/vfs_bio.c sys/miscfs/syncfs/sync_subr.c and setting
AcpiGbl_EnableAmlDebugObject.
(mostly passing the address of a uint64_t when typed as CTLTYPE_INT).
I've test built quite a few kernels, but there may be some unfixed MD
fallout. Most likely passing &char[] to char *.
Also add CTLFLAG_UNSIGNED for unsiged decimals - not set yet.

branches: 1.9.2;
Initialize sensor states before registering.

Limit reading from registers at most once every second with using
ratecheck(9).

branches: 1.7.2;
lom_refresh():
Update only the sensor status specified by the edata as noted in
sysmon_envsys(9).

lom_sysctl_alarm():
Update alarm status before reading via sysctl to make it usable at
a boot time.

branches: 1.6.2; 1.6.4; 1.6.6;
Fix off-by-one in LOMlite hostname code. From rev 1.21 of OpenBSD.

branches: 1.5.2; 1.5.4; 1.5.6;
Make fault LED and alarms status changeable via sysctl(8).
The sysctl entries are created under the hw.lomN MIB.

Merge change of OpenBSD rev 1.20:

Remove debug printf and properly dequeue command instead when a read times out
on LOMLite2.

Add support for monitoring Fault LED and Alarms status.

Merge changes between revision 1.16 and 1.19 of OpenBSD with
shutdownhook_establish(9) to pmf(9) conversion:

- LOMlite seems to get wedged from time to time; add some code to unwedge it.

- Make sure we don't insert and entry into the list of pending commends twice.

- Establish a shutdown hook to disable the watchdog timer to prevent watchdog
triggers after the kernel has been halted.

- Handle LOMlite2 in an interrupt-driven way; avoids using delay(9) once the
machine is up and running.

branches: 1.1.2;
Port lom(4) driver for LOMlite lights out management hardware monitor
and watchdog timer from OpenBSD.

It supports the LOMlite found on Sun Netra t1 and the LOMlite2 found
on Sun Netra T1/X1 and Sun Fire V100/V120.