Emulate instructions emitted by OpenBSD/i386 version 5.5:
- CMP REG, r/m
- MOV AX/EAX/RAX, moffset
- MOV moffset, AX/EAX/RAX
- PUSH r/m
Fix the igb(4) redirection table to correctly populate.

This is similar to the ixgbe(4) fix.

Tested:

* Intel I350 gigabit adapter
fparseln(3): Update from NetBSD sources.

-fix a condition so that fparseln() doesn't report spurious empty lines
 eg after 2 comment lines, or on EOF after a single comment line
-no escape character means no escaped characters

modify the previous fix so that no pointless realloc()s are done in
the case of multiple empty continuation lines, and comment the code
to make the logics obvious

fparseln is now part of libc in NetBSD so this changes the previous
revision numbering.

Obtained from:	NetBSD (CVS Rev. 1.6-1.7)
MFC after:	2 weeks
Fix mismatch.

MFC after:	3 days
don't set CR4 PSE bit on amd64

Setting PSE together with PAE or in long mode just makes the PSE bit
completely ignored, so don't set it.

Sponsored by: Citrix Systems R&D
Reviewed by: kib
Fix typo in comment: noone -> no one.
Fix minor style(9) nits.
Simplify comment to remove multiple negative and passive voice.
Cosmetic changes to unp_internalize

Don't throw away the result of fget_unlocked.
Move fdp increment to for loop to make it consistent with similar code
elsewhere.

MFC after:	1 week
Fix builds on older FreeBSD versions and/or non-FreeBSD machines:
don't use _Static_assert unconditionally.
- Use Rs/Re mdoc macros.
- Remove duplicate and/or redundant content.
Prepare fget_unlocked for reading fd table only once.

Some capsicum functions accept fdp + fd and lookup fde based on that.
Add variants which accept fde.

Reviewed by:	pjd
MFC after:	1 week
Fix a bug where include file `networking/services.subr' was not being
properly clustered.

Change `fixedsize' to `fixedsize = true' to satisfy newer versions of dot(1)
generating error "Warning: <stdin>: syntax error in line 27 near ','".

Remove bounding cluster surrounding various include-groupings, allowing
groups of include files to float freely to the greatest consumer (reducing
the density of rendered diagrams).

While here, change the bgcolor of include clusters from white to X11 color
`thistle' (a light purple).

Also, add the word "Subroutines" after include cluster labels.

Do not terminate the digraph definition with a semi-colon [;] after the
ending brace to satisfy newer versions of dot(1) generating error "Warning:
<stdin>: syntax error in line 940 near ';'".

MFC after:	3 days
X-MFC-to:	stable/10, stable/9
Update so that clean target in sys/boot will delete the symlink
created for machine

Reviewed by:	emaste
Add .NOPATH to the machine target so that builds in sys/boot work and don't
error out building zfs loader.

Submitted by:	sjg@freebsd.org
Deprecate the use of XDEV and XDEV_ARCH and just use TARGET/TARGET_ARCH
for the xdev build target, which is awesome and totally works.

Reapply svn R268377 with correct name of libsupc++ here as this does
resolve one dependancy race when building the xdev target.

the xdev target builds for amd64, i386, mips, mips64 and armv6 with this commit,
must be built as root, must be built from /usr/src, must not have a /usr/obj and
places the xdev tools in /usr/$TARGET_ARCH-freebsd

the xdev target still leaves some assorted files strewn about your /usr/src when
this is done and needs to be investigated further.

Phabric:	https://phabric.freebsd.org/D385
Submitted by:	bsdimp
cxgbe(4):  Keep track of the clusters that have to be freed by the
custom free routine (rxb_free) in the driver.  Fail MOD_UNLOAD with
EBUSY if any such cluster has been handed up to the kernel but hasn't
been freed yet.  This prevents a panic later when the cluster finally
needs to be freed but rxb_free is gone from the kernel.

MFC after:	1 week
Fake out the deprecation of XDEV and XDEV_ARCH by
continuing to use the variables in the configuration
file, but switch XDEV= and XDEV_ARCH= to TARGET= and
TARGET_ARCH= appropriately.

Sponsored by:	The FreeBSD Foundation
Delete the entire cleandepend/cleanmachine target thing now that its been
cleared out in r269029

Reviewed by:	emaste@freebsd.org