Make it possible to use the env kernel config file option for AVILA
and CAMBRIA boards that does not use loader to load the kernel. This
is basically how it was done for i386. This way tunables can also be
set. For example in config file:

env "/conf/AVILA.env"

And in AVILA.env:

vfs.unmapped_buf_allowed=0

MFC after:	2 weeks
o Remove at compile time the HASH_ALL code, that was never
  tested and is unfinished. However, I've tested my version,
  it works okay. As before it is unfinished: timeout aren't
  driven by TCP session state. To enable the HASH_ALL mode,
  one needs in kernel config:

	options FLOWTABLE_HASH_ALL

o Reduce the alignment on flentry to 64 bytes. Without
  the FLOWTABLE_HASH_ALL option, twice less memory would
  be consumed by flows.
o API to ip_output()/ip6_output() got even more thin: 1 liner.
o Remove unused unions. Simply use fle->f_key[].
o Merge all IPv4 code into flowtable_lookup_ipv4(), and do same
  flowtable_lookup_ipv6(). Stop copying data to on stack
  sockaddr structures, simply use key[] on stack.
o Move code from flowtable_lookup_common() that actually works
  on insertion into flowtable_insert().

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
Bring copyright notice to standard style.
Whitespace.
Add my copyright to flowtable.
etcupdate should use the src tree from where the release is built, not
the default (/usr/src) tree.

MFC after:	2 weeks
Fix formatting.

"Manpages should start a new sentence on a new line. This makes it easier
for translators to track changes." -jhb

Approved by:	jhb
MFC after:	3 days
Sponsored by:	SupraNet Communications, Inc
pcm(4): Permit non-root users to change default unit

Discussed with:	mav
Update lldb for clang/llvm 3.4 import

This commit largely restores the lldb source to the upstream r196259
snapshot with the addition of threaded inferior support and a few bug
fixes.

Specific upstream lldb revisions restored include:
   SVN      git
  181387  779e6ac
  181703  7bef4e2
  182099  b31044e
  182650  f2dcf35
  182683  0d91b80
  183862  15c1774
  183929  99447a6
  184177  0b2934b
  184948  4dc3761
  184954  007e7bc
  186990  eebd175

Sponsored by:	DARPA, AFRL
Give the fdt helper routines static linkage since no global definition
of them is provided anywhere.  (gcc was nice enough to warn about this,
clang didn't for some reason.)
In sys/dev/usb/controller/uss820dci.c, similar to r261977, fix a warning
about uss820dci_odevd being unused, by adding it to the part that
handles getting descriptors.

Reported by:	loos
Reviewed by:	hselasky
MFC after:	3 days
Adjust USB quirk.

MFC after:	1 week
Submitted by:	Volodymyr Kostyrko <arcade@b1t.name>
Our quirk table is almost full. Add some room for more quirks.

MFC after:	1 week
test_eagain_*_* should've been using nonblocking sockets instead of
blocking sockets.  The error was not exposed as long as the kernel
suffered from PR kern/185812.  Now corrected, these tests pass on
DragonFlyBSD 3.6.0.

PR:		kern/185812
Sponsored by:	Spectra Logic Corporation
MFC after:	2 weeks
Add $FreeBSD$.

MFC after:	1 week
Remove the 3rd clause ("advertising clause") of the BSD license as
permitted by the University of Berkeley on July 22, 1999.

Reviewed by:	imp
MFC after:	1 week