Revert last change, it breaks other things.
Remove vestiges of knowing the ISA bus, which we gave up on around 20
years ago. Remove redunant copy of isaregs.h.
Add KTR events for the PMAP interface functions
1.  move unmapped_buf_allowed to machdep.c.
2.  map both pmap_mapbios() and pmap_mapdev() to pmap_mapdev_attr()
    and have the actual work done by pmap_mapdev_priv() (renamed from
    pmap_mapdev()). Use pmap_mapdev_priv() to map the I/O port space
    because we can't use CTR() that early.
3.  add pmap_pinit_common() that's used by both pmap_pinit0() and
    pmap_pinit(). Previously pmap_pinit0() would call pmap_pinit(),
    but that would create 2 KTR events. While here, use pmap_t instead
    of "struct pmap *".
4.  fix pmap_kenter() to use vm_paddr_t as the type for the physical.
5.  various white-space adjustments for consistency.
6.  use C99 and KNF for function definitions where appropriate.
7.  slightly re-order prototypes and defines in <machine/pmap.h>

No functional change (other than the creation of KTR_PMAP events).
Remove unused option -r from zpool.

Submitted by:	Richard Yao <ryao gentoo org>
MFC after:	2 weeks
Mark multi_test as requiring /usr/share/dict/words.

The file may not be present if MK_DICT=no.  Pointed out by Casey Peel.
cxgbe(4): if_iqdrops statistic should include tunnel congestion drops.

MFC after:	1 week
Add a shorter alias for if_data.ifi_oqdrops.
cxgbe(4): Use ifi_oqdrops in if_data to count drops in the tx path.
Don't call ath_init() inside the lock.

Yes, this means that sc_invalid is slightly racy, but there are other
issues here which need fixing.

This fixes a source of eventual LORs - ath_init() grabs ATH_LOCK to do
work and releases it before it calls ieee80211_start_all().
ieee80211_start_all() will grab the net80211 comlock to iterate over
the VAPs.

TODO:

* .. I should just migrate the ieee80211_start_all() work to a
  deferred task so it can be done later; it doesn't have to be
  immediately done.

Tested:

* AR5416, STA mode
Shuffle ah_powerMode to be in a sane spot for the given power operation.

This way the state changes from sleep->awake before the registers are poked
and from awake->sleep after the registers are poked.

This way spurious warnings aren't printed by my (to be committed)
debugging code.

Tested:

* AR5416, STA
Add some debugging code to print out if registers are touched whilst the
device is asleep.

This doesn't avoid logging errors for things that are actually OK to
access whilst the chip is asleep (eg, the RTC registers (0x7000->0x70ff
on the AR5416 and later.)

But, this is a pretty good indicator if things are accessed incorrectly.

Tested:

* AR5416, STA
Since mlaier has been inactive for a long time, grab maintainership on pf.
Try to resolve a possible deadlock when detaching USB devices which
create character devices. The deadlock can happen if an application is
issuing IOCTLs which require USB refcounting, at the same time the USB
device is detaching.

There is already a counter in place in the USB device structure to
detect this situation, but it was not always checked ahead of invoking
functions that might destroy character devices, like detach, set
configuration, set alternate interface or detach active kernel driver.

Reported by:	Daniel O'Connor <doconnor@gsoft.com.au>
MFC after:	1 week
Disable debugging by default.
- Add display-related and clk devices to the tree
- Prevent resources intersection with EHCI driver
Add driver for Display Controller.
Add support for Samsung Chromebook (ARM Cortex A15 machine).
share/man/man7/tests.7
	Added a section on test suite configuration, and cleaned up up
	grammar errors and awkward prose.  The config variables were
	discussed on freebsd-testing.

Discussed with: Garrett Cooper, jmmv
MFC after:	2 weeks
Sponsored by:	Spectra Logic Corporation
Fix kern/187712: config(8) does not respect KERNCONFDIR.
The impact of this bug is that you cannot build a kernel if both of the
following are true:
1) The kernel config file is in a non-default location
2) The kernel config file uses the "include" statement from config(5).

usr.sbin/config/main.c
usr.sbin/config/config.8
usr.sbin/config/config.h
usr.sbin/config/lang.l
	Added a "-I path" option to config(8).  By analogy to cc(1), it adds
	an extra path in which the "include" statement will search for
	files.

Makefile.inc1
	Pass "-I ${KERNCONFDIR}" to config(8).

PR:		kern/187712
Reviewed by:	will, imp (previous version)
MFC after:	3 weeks
Sponsored by:	Spectra Logic Corporation
Remove printf's.