MFC r263778:

Add a SUBDIR_PARALLEL option to bsd.subdir.mk, to allow make to process
all the SUBDIR entries in parallel, instead of serially.  Apply this
option to a selected number of Makefiles, which can greatly speed up the
build on multi-core machines, when using make -j.

This can be extended to more Makefiles later on, whenever they are
verified to work correctly with parallel building.

I tested this on a 24-core machine, with make -j48 buildworld (N = 6):

		before    stddev       after    stddev
		=======   ======       =======  ======
real time        1741.1     16.5         959.8     2.7
user time       12468.7     16.4       14393.0    16.8
sys  time        1825.0     54.8        2110.6    22.8

(user+sys)/real     8.2                   17.1

E.g. the build was approximately 45% faster in real time.  On machines
with less cores, or with lower -j settings, the speedup will not be as
impressive.  But at least you can now almost max out a machine with
buildworld!

Submitted by:	jilles

MFC r263833:

Enable parallel building for gnu/usr.bin and usr.bin/clang too.
MFC r264238:

For GNU as, add two missing modes for each of the fcomip and fucomip
instructions.  Partially obtained from OpenBSD by Pedro Giffuni, while I
added the fcomip variants.

Apparently this should help with compiling certain variants of WebKit.
MFC r263429

Fix kern/187712: config(8) does not respect KERNCONFDIR.
The impact of this bug is that you cannot build a kernel if both of the
following are true:
1) The kernel config file is in a non-default location
2) The kernel config file uses the "include" statement from config(5).

usr.sbin/config/main.c
usr.sbin/config/config.8
usr.sbin/config/config.h
usr.sbin/config/lang.l
	Added a "-I path" option to config(8).  By analogy to cc(1), it adds
	an extra path in which the "include" statement will search for
	files.

Makefile.inc1
        Pass "-I ${KERNCONFDIR}" to config(8).
Merge r264084: make the Dresden Elektronik "USB Level Shifter Low Cost"
known to the FTDI driver.
MFC:	r261037, r264278

Merge OpenSSL 1.0.1f and 1.0.1g.
MFC r263879:

  Add `-S' to display syscall numbers in the output as well.
MFC r263459: MFV 263436-263438:

3947 zpool(1M) references nonexistent zfs-features(5)
4540 zpool(1M) man page doesn't describe "readonly" property
3948 zfs sync=default is not accepted
4611 zfs(1M) still mentions 'send -r' in synopsis
4415 zpool(1M) man page missing "import -m" description
4570 Document dedupditto pool property
4572 Dedup-related documentation additions for zpool and zdb.
1371 Add -D option description to zpool(1M) manpage
4571 Add documentation for -T and interval to "zpool list"
MFC r263889 (MFV r263887):

3993 zpool(1M) and zfs(1M) should support -p for "list" and "get"
4700 "zpool get" doesn't support -H or -o options
MFC r264294:
Fix for infinite XHCI reset loops when the set address USB request fails.
MFC r264151:

Prevent alq from panic when the invalid alq_file path specified.
MFC r264146:
Fix a race between kqueue_register() and kqueue_scan() setting KN_INFLUX
flag while knlist is not locked, which caused lost notifications from
parallel knote().
MFC r264173:
Use realloc(9) instead of doing the reallocation inline.
MFC: r263881, r263952, r263983, r264068, r264090, r264131

Some xdev fixes:

- if TARGET_ARCH is not defined and XDEV_ARCH is defined then early define
  TARGET_ARCH to the valud of XDEV_ARCH: This allow the xdev-build target
  to be able to correctly chose the compiler it needs to build
- Allow overwriting XDTP to allow a user to not chose where the xdev env will
  live in
- Fix build for gcc only xdev (like ia64) by providing the proper -B to the
  toolchain and not relying on gcc being installed already in base
- Fix TOOLS_PREFIX so the generated toolchain has the right default sysroot when
  installed intead of getting the DESTDIR one
- Fix supporting DESTDIR
- Also overwrite CXX (needed for cross building c++ libraries with clang) and
  CPP (needed to cross build some libraries when gcc is the target default
  compiler but gcc is not installed on the building host)
- Prevent XDTP from being a relative path:
  XDTP is used as the default SYSROOT for clang and thus should be an absolute path.
- Respect default CC
MFC: r263948

Convert an unused banner from skeleton.c into a comment.
It is added to every generated files and fix build at certain warning level with clang 3.4

Submitted by:	Thomas Dickey <dickey@his.com> (byacc upstream)
Spotted by:	glebius
MFC r260607, r260610, r260934:

r260607:
The onyx codec works also as module, so add it.

r260610:
Described in the man page but not implemented. Here it comes,
atomic_swap_32/64. The latter only for powerpc64.

r260934:
Fix the resource information for the i2s-a node on certain G5 PowerMacs.
This is the first step needed to get the snapper codec working on those
machines.
The second step is to enable the corresponding I2S device and its clock.

Tested on machines where the snapper codec was already working, a G4 PowerBook
and a PowerMac9,1 with a Shasta based macio.
The PowerMac7,2/7,3 with a K2 based macio can now also play sound.
MFH (r263712): upgrade openssh to 6.6p1
MFH (r264308): restore p level in debugging output
Document r264377, OpenSSH update to 6.6p1.
While here, bump copyright year.

Todo: strip old entries from this file since 10.0-RELEASE.

Sponsored by:	The FreeBSD Foundation
Trim stale entries.
Use consistent <para>&nbsp;</para> for empty sections.

Sponsored by:	The FreeBSD Foundation
Clean up leading/trailing whitespace.
Rewrap paragraphs and long lines.

Sponsored by:	The FreeBSD Foundation
Remove reference to FreeBSD 6.2-R in the freebsd-update(8) note.
Rewrap.

Sponsored by:	The FreeBSD Foundation