Update videodev2.h to the version from linux kernel 2.6.34.14.
This version is dual-licensed: 3 clause BSD license and GPL v2+.
Take the training-wheels off, after nearly 30 months of development. MFC to
stable/9 planned after MFC 3-day period. The MFC to stable/9 is desired for
the next release to get some much-needed time:
+ Living side-by-side with sysinstall for compare/contrast/transition
+ Living side-by-side with bsdinstall for integration/transition
+ Additional feedback/testing before eventual 10.0-R to make it even better

MFC after:	3 days
Don't clear the SYSCONFIG register on boot.

This follows section 18.4.2.2 SD Soft Reset Flow in the TI AM335x Technical
Reference Manual and seems to fix the "ti_mmchs0: Error: current cmd NULL,
already done?" messages.
Remove unneeded page lock around vm_page_insert().

Submitted by:	alc
Import HighPoint DC Series Data Center HBA (DC7280 and R750) driver.
This driver works for FreeBSD/i386 and FreeBSD/amd64 platforms.

Many thanks to HighPoint for providing this driver.

MFC after:	1 day
Update driver with recent vendor improvements, most notably support
of Skyhawk adapters.

Many thanks to Emulex for their continued support of FreeBSD.

Submitted by:	"Duvvuru,Venkat Kumar" <VenkatKumar.Duvvuru Emulex.Com>
MFC after:	1 day
Initial implementation of the HTree directory index.

This is a port of NetBSD's GSoC 2012 Ext3 HTree directory indexing
by Vyacheslav Matyushin.  It was cleaned up and enhanced for FreeBSD
by Zheng Liu (lz@).

This is an excellent example of work shared among different projects:
Vyacheslav was able to look at an early prototype from Zheng Liu who
was also able to check the code from Haiku (with permission).

As in linux, the feature is not available by default and must be
enabled explicitly with tune2fs. We still do not support the
workarounds required in readdir for NFS.

Submitted by:	Zheng Liu
Tested by:	Mike Ma
Sponsored by:	Google Inc.
MFC after:	1 week
- Move videodev headers from compat/linux to contrib/v4l (cp from vendor and
  apply diff to compat/linux versions).
- The cp implies an update of videodev2.h to the linux kernel 2.6.34.14 one.

The update makes video in skype v4 work on FreeBSD.

Tested by:	Artyom Mirgorodskiy <artyom.mirgorodsky@gmail.com>
		(update of header only)
Add SDT_PROBE_DEFINE0 for consistency with SDT_PROBE0.

MFC after:	1 week
Add a man page for the SDT_* macros, which can be used to define new static
DTrace probes and providers in kernel code.

MFC after:	1 week
Add files related to ext2 HTree implementation

These should've been added along with r252890

Reported by:	gonzo
PointyHat:	pfg
MFC after:	1 week
Fix some typos.

MFC after:	1 week