Retire various intertwined bits of fbd(4) and vt_fb, in particular the
pixel modification indirection. No actual drivers use it and those that
might (e.g. creatorfb) use custom implementations of vd_bitbltchr().
Optionally include the install command as found on Juniper products
like EX and SRX. The install command uses pkgfs to extract a kernel,
zero or more modules and a root file system from the specified package
and boots the kernel. The name of the kernel, the list of modules and
the name of the root file system can be specified by putting a
file called "metatags in the package.

The package to use is given by an URL. The schemes supported are
tftp and file. For the file scheme, the disk is currently hardcoded
but that should really look for the package on all devices and
partititions.

Obtained from:	Juniper Networks, Inc.
Fix several issues and inconsistencies in UNMAP capabilities reporting.

This makes Windows 2012 to start using UNMAP on our disks.

MFC after:	2 weeks
Sponsored by:	iXsystems, Inc.
Mention tmpfs(5)

PR:		192389
Submitted by:	yaneurabeya@gmail.com
Approved by:	hrs (mentor)
Reduce reported additional INQUIRY data length.

sizeof(struct scsi_inquiry_data) of 256 bytes combined with off-by-one
error in the changed code gave total INQUIRY data length above 255 bytes,
that was maximal INQUIRY length in SPC-2.  While SPC-3 increased the
maximal length to 64K, at least sg3_utils are still confused by that.

MFC after:	1 week
drm: fix usage of vm_phys_fictitious_to_vm_page

vm_phys_fictitious_to_vm_page should not be called directly, even when
operating on a range that has been registered using
vm_phys_fictitious_reg_range. PHYS_TO_VM_PAGE should be used instead
because on arches that use VM_PHYSSEG_DENSE the page might come
directly from vm_page_array.

Reported by: nwhitehorn
Tested by: nwhitehorn, David Mackay <davidm.jx8p@gmail.com>
Sponsored by: Citrix Systems R&D
Set fb_pbase properly on PowerPC in the case where we have to guess at
the right register bank for the framebuffer. Disable the assigned-addresses
path on SPARC since it is just a hack for IBM PPC systems and was neither
relevant for nor worked on SPARC anyway.
Fix athdecode to actually work.

* Add AR9287 and AR9331 chipset support - it just uses the AR5416 support
  for now so some of the register mappings are wrong, but it works well
  enough.

* don't call exit() from opmark().
Merge the following from ^/projects/release-noxdev:
r269549, r269551, r269552, r269553, r269554, r269555, r269558, r269559,
r269560, r269561, r269628, r269629, r269630, r269635, r269637:

r269549:
  Create a new project branch, release-noxdev, for
  a sandbox workspace outside of head/ to update the
  release bits for arm builds since the deprecation of
  the XDEV and XDEV_ARCH make(1) variables.

r269551:
  Define load_chroot_env() and load_target_env()
  prototypes.

r269552:
  Call load_chroot_env() and load_target_env() where
  they can be mutually conflicting with regard to
  TARGET, TARGET_ARCH, XDEV, and XDEV_ARCH.

r269553:
  Add shebang line to arm/*.conf files since these
  should be considered to be executable (albeit not
  on their own) shell scripts.

r269554:
  Redefine load_chroot_env() and load_target_env() in
  the arm/*.conf files, and reindent.

r269555:
  Simplify where load_chroot_env() and load_target_env() are
  called.

r269558:
  Provide example in release.conf.sample for overriding the
  load_chroot_env() and load_target_env() prototypes.

r269559:
  Remove a gratuitous newline.

r269560:
  Unset potentially conflicting variables in load_chroot_env()
  and load_target_env().

r269561:
  Make global variables global, and accessible outside of
  the functions within which they were once defined.

r269628:
  Remove XDEV/XDEV_ARCH evaluation if EMBEDDEDBUILD is set.

r269629:
  In arm/release.sh, switch TARGET/TARGET_ARCH back to the
  original XDEV/XDEV_ARCH make(1) variables.

  In theory, this should have been a no-op, but the TARGET and
  TARGET_ARCH are now unset in load_target_env() to avoid
  collision with the chroot userland.

r269630:
  Export variables in the arm/*.conf files because they
  need to be passed through release.sh to arm/release.sh.

  Set MK_TESTS=no for the xdev target.

r269635:
  As part of the XDEV/XDEV_ARCH deprecation, the
  'xdev-links' target was intentionally no longer
  invoked automatically.

  Invoke the xdev-links target after xdev, which
  creates, for example, /usr/bin/armv6-freebsd-cc
  symlink to /usr/armv6-freebsd/usr/bin/cc.

r269637:
  Set TARGET and TARGET_ARCH to the XDEV and XDEV_ARCH
  counterparts for the xdev and xdev-links make(1)
  targets.

Sponsored by:	The FreeBSD Foundation
Comment load_chroot_env() and load_target_env() in
the release/release.conf.sample file.  The uncommented
version snuck in during testing.

Sponsored by:	The FreeBSD Foundation
Add wrappers to assert that vm object is unlocked and for try upgrade.

Reviewed by:	alc
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
The vm_pager_page_unswapped() pager op is only implemented for the
swap pager.  Swap pager uses a private mutex to protect swap metadata,
and does not rely on the vm object lock to ensure integrity of it.

Weaken the requirement for the vm object lock by only asserting locked
object in vm_pager_page_unswapped(), instead of locked exclusively.

Reviewed by:	alc
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
cxgbe(4):  Let caller specify whether it's ok to sleep in
t4_sched_config and t4_sched_params.

MFC after:	2 weeks
put these under bootverbose, they are only needed for debugging, not
useful for the normal user durning normal runtime...
Use a SYSINIT to init the array of interrupt names on arm.  This was
called from initarm() in arm/machdep.c, but many legacy arm platforms
have their own private initarm(), so a SYSINIT fixes everyone.

Reported by:	jmg
Rework privatelib/internallib

Make sure everything linking to a privatelib and/or an internallib does it directly
from the OBJDIR rather than DESTDIR.
Add src.libnames.mk so bsd.libnames.mk is not polluted by libraries not existsing
in final installation
Introduce the LD* variable which is what ld(1) is expecting (via LDADD) to link to
internal/privatelib
Directly link to the .so in case of private library to avoid having to complexify
LDFLAGS.

Phabric:	https://phabric.freebsd.org/D553
Reviewed by:	imp, emaste
Make libohash a proper internallib instead of hidding it in m4

mandoc development seems to be also using ohash so prepare to share the code when
needed
Add more private obsolete files
Give a brief message as to what error was encountered to help the user along.

Reviewed by:	nwhitehorn
MFC after:	2 weeks
Correct the problems with the ptrace(2) making the debuggee an orphan.
One problem is inferior(9) looping due to the process tree becoming a
graph instead of tree if the parent is traced by child. Another issue
is due to the use of p_oppid to restore the original parent/child
relationship, because real parent could already exited and its pid
reused (noted by mjg).

Add the function proc_realparent(9), which calculates the parent for
given process. It uses the flag P_TREE_FIRST_ORPHAN to detect the head
element of the p_orphan list and than stepping back to its container
to find the parent process. If the parent has already exited, the
init(8) is returned.

Move the P_ORPHAN and the new helper flag from the p_flag* to new
p_treeflag field of struct proc, which is protected by proctree lock
instead of proc lock, since the orphans relationship is managed under
the proctree_lock already.

The remaining uses of p_oppid in ptrace(PT_DETACH) and process
reapping are replaced by proc_realparent(9).

Phabric:	D417
Reviewed by:	jhb
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks