kernel/acpi: Use ACPI_FAILURE() and also remove unneeded variables.
udp: Prepare for re-redispatching for SO_REUSEPORT sockets
inpcb: Remove the code that does hash-threshold wildcard sockets selection

We always use modulo-N here.
netrate/pktgen: Unbreak building
kernel/acpi: Sync acpi_resource with FreeBSD.

* Use AcpiWalkResources() for parsing _CRS result.

* Add support for 64-bit address range resources.

* Add workaround for BIOSes that specify edge-sensitive but active low
  settings for ACPI-enumerated serial ports (such as the one found on
  an Intel D2500CCE mobo).

* Minor fixes/cleanup.
udp: Factor out function to reset inpcb route cache
kernel/drm: Add back #include "opt_drm.h" to drmP.h so that DRM_DEBUG works.
kernel/i915: Add missing opt_acpi.h to SRCS.
kernel/lockf: Add include for LOCKF_DEBUG and fix printf warnings.
test/udp: Add SO_REUSEPORT test
hammer - Disallow creation of a file/subdir/etc in a deleted directory

* Disallow the creation of inodes within deleted directories.  This
  possibility occurs if a program is CD'd into an empty directory which
  is then rmdir'd, and the program then tries to create something
  in the now-destroyed directory.

Reported-by: varialus
inpcb: Save local group index

So that the caller, e.g. UDP protocol, could redistribute the inpcb
accordingly.

We keep the local group sorted by the inpcb local group index in
ascending order.  This eases the multi-process userland application
which uses SO_REUSEPORT sockets and binds process to the owner cpu
of the SO_REUSEPORT socket:
If we didn't sort the local group by the inpcb local group index and
one of the process owning an inpcb in this local group restarted, e.g.
crashed and restarted by watchdog, other processes owning a inpcb in
this local group would have to detect that event, refetch its socket's
owner cpu, and re-bind.
inpcb: Add in_pcb{link,unlink}_flags() to bypass INP_WILDCARD check

It is safe to change the inpcb's pcblist while the it is still referenced
by the wildcard hash.
udp: Redistribute SO_REUSEPORT socket based on local group index

This improves the request/response transation rate a lot for UDP sockets
which set SO_REUSEPORT, by cpu localizing the request and response
processing.

tools/netrate/udpecho 64B request/response transation rate is raised from
1.24Mtrans/s to 1.39Mtrans/s (~12% improvement).
socket: Provide socket owner cpuid hint

If the cpuid hint could not be provided or the cpuid hint does not make
sense, -1 will be returned as cpuid hint, e.g. TCP listen sockets w/o
SO_REUSEPORT.

This helps avoiding unnecessary IPIs and contention on receiving sockbuf
token.
tools/netrate: Get socket's cpu hint and bind cpu accordingly
net: import FreeBSD's if_lagg
net: add version numbers to lagg sourcefiles, adapt manpage
tcp: Check multicast sopt name after sopt level is checked
inpcb: Revoke INP_WILDCARD_MP, which serves no purpose now

While I'm here, use ncpus2 instead of ncpus for TCP, which only uses
ncpus2 netisrs.