Correctly initialise the 2-chain antenna mask in the link quality table.

The previous code simply hard-coded IWN_ANT_AB which is only correct for
some of the NICs.

Now, if the NIC is a 1-stream TX, you need to set IWN_ANT_AB and _not_
just a single antenna.  The Intel 5100 firmware panics the moment the
link quality table is updated.

So!

* no secondary antenna? Set it to IWN_ANT_AB;
* two-stream device? Transmit on the full transmit antenna configuration.

Tested:

* Intel 5100, STA
* Intel 2200 (eadler)

Obtained from:	Linux iwlwifi
Strip the -pN patch level from the VERSION string which gets encoded into
CTF data.  Otherwise FreeBSD Update builds think every kernel file has
changed every time there's a security advisory, since the FreeBSD Update
build code isn't smart enough to look inside CTF data to ignore those
changes.

Pointy hat to:	cperciva
MFC after:	1 day, or before the next BETA
Remove useless comparisions of assigned offset and resid with the
sources from uio.  Both uio_offset and offset, and uio_resid and resid
have the same types for some time.

Add check for buflen overflow by comparing the buflen with both offset
and resid (vs. comparing with offset only, as it is currently done).

Reported and tested by:	pho
Approved by:	des (pseudofs maintainer)
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Leave a note that the 5300 is a 3x3 NIC.
lldb: Correct a standalone debug file path

For a file /bin/ls with a .gnu_debuglink entry of "ls.debug" the path
should be /usr/lib/debug/bin/ls.debug, not /usr/lib/debug/bin/ls.

ref: https://sourceware.org/gdb/onlinedocs/gdb/Separate-Debug-Files.html

Upstream defect pr17903 (http://llvm.org/pr17903)

Sponsored by:	DARPA, AFRL
Allow this to work with fmake
Based on patch from Garret Cooper.
o Use common ARMv6/v7 bus_space tag.
o Use new helper routines for arm static device mapping.
o style(9) tweaks.
Escape a newline added in the previous commit when verifying the flags
passed to the build, diff, or status commands.
Merge upstream LLDB r194487:

  Log failure to restore thread state in ThreadPlanCallFunction::DoTakedown

  In order to help track down llvm.org/pr17226.

Sponsored by:	DARPA, AFRL
Since the doc/ toolchain conversion to docbook 5.0, JADETEX
is no longer a valid option, so remove 'WITHOUT_JADETEX=yes'
from PBUILD_FLAGS.

While here, also remove 'WITHOUT_X11=yes', since it will
cause a dependency conflict by requiring both print/ghostscript9
and print/ghostscript9-nox11.

Switch to OPTIONSNG format (WITHOUT_* -> OPTIONS_UNSET='FOO'),
and unset the FOP option, which requires Java (although it is
disabled by default).  Also unset the 'IGOR' option, since
textproc/igor is a validation tool, not necessarily a dependency
of the doc/ build itself.

While here, reduce the line length of PBUILD_FLAGS.

MFC after:	3 days
Sponsored by:	The FreeBSD Foundation
Fix whitespace.
Avoid SEGV when passed NULL for list
Don't SEGV when Hash_Table is uninitialized
gperf: bring small update from Apple Developers tools 4.4

From [1]

offset.patch
Makes use the C offsetof() macro.

size_type.patch
Lets you specify the type for length parameters.

[1] http://opensource.apple.com/source/gperf/gperf-9/patches/

MFC after:	3 weeks
This is "scan_flags" from Linux.
Fix (I think!) the scan timeouts on the intel NICs.

This field needs to be (a) set, and (b) greater than the other timeouts
(passive, active, maxquiet, etc.)  It also is in microseconds, not
milliseconds.

I hope this will fix the scan hangs that people are seeing.

Obtained from:	Linux iwlwifi
Fix copy+paste-o, OEA64 uses LPTE, not PTE.

X-MFC with:	r257941
Emphasize that pf(4) in FreeBSD doesn't match pf(4) in
OpenBSD 4.5, but is derived from it, and got some
important local changes.

Wording by:	cperciva
When verifying that files we need are present, also check that they don't
have zero length.  Filesystem corruption will tend to truncate files, and
since these are short that's likely to result in them becoming empty.

Suggested by:	Richard Clayton
Convinced by:	rwatson
MFC after:	3 weeks
Fix a very bad typo from r248887.

Submitted by:	art