- pctrie really only requires two byte alignment so that there is a single
   bit available for a flag in the pointer.  However, it felt more correct
   to enforce natural alignment of the key pointer.  Unfortunately on
   32bit architectures 64bit integers are not always naturally aligned.
   Change the assert to enforce only 32bit alignment of the 64bit key for
   now to fix the build.  A more correct fix would be to properly sort
   the struct buf fields which definitely suffer from bloat due to padding.
Revert r250565 which causes issues for older CPUs

PR:		conf/178504
Requested by:	many
Add support for the eofflag to nfs_readdir() in the new NFS
client so that it works under a unionfs mount.

Submitted by:	Jared Yanovich (slovichon@gmail.com)
Reviewed by:	kib
MFC after:	2 weeks
mdoc sweep.
MFV: less v458.

MFC after:	2 weeks
Pull in r181286 from upstream llvm trunk:

  LoopVectorize: getConsecutiveVector must respect signed arithmetic

  We were passing an i32 to ConstantInt::get where an i64 was needed and we must
  also pass the sign if we pass negatives numbers. The start index passed to
  getConsecutiveVector must also be signed.

  Should fix PR15882.

This should fix Firefox crashes some people have been reporting, when it
is compiled with -O3.
Bandaid for compiling with gcc, which happens to be the default compiler
for a number of platforms still.
The HPN patch added a new BUG bit for SSH_BUG_LARGEWINDOW
and the update to 6.1 added SSH_BUG_DYNAMIC_RPORT with the
same value.

Fix the HPN SSH_BUG_LARGEWINDOW bit so it is unique.

Approved by:	des
MFC after:	2 weeks
Add a remark to the effect that a manually started relearn will always
result in the battery being completely drained, even in transparent learning
mode.

MFC in:		3 days
Sponsored by:	Sandvine Inc.
o Add accessor functions to add and remove pages from a specific
  freelist.
o Split the pool of free pages queues really by domain and not rely on
  definition of VM_RAW_NFREELIST.
o For MAXMEMDOM > 1, wrap the RR allocation logic into a specific
  function that is called when calculating the allocation domain.
  The RR counter is kept, currently, per-thread.
  In the future it is expected that such function evolves in a real
  policy decision referee, based on specific informations retrieved by
  per-thread and per-vm_object attributes.
o Add the concept of "probed domains" under the form of vm_ndomains.
  It is responsibility for every architecture willing to support multiple
  memory domains to correctly probe vm_ndomains along with mem_affinity
  segments attributes.  Those two values are supposed to remain always
  consistent.
  Please also note that vm_ndomains and td_dom_rr_idx are both int
  because segments already store domains as int.  Ideally u_int would
  have much more sense. Probabilly this should be cleaned up in the
  future.
o Apply RR domain selection also to vm_phys_zero_pages_idle().

Sponsored by:	EMC / Isilon storage division
Partly obtained from:	jeff
Reviewed by:	alc
Tested by:	jeff