Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Update driver to vendor's version 1.16 plus some local changes:

- override_kernel_driver() has been removed since this is an
in-tree version of driver.
- __DATE__ and __TIME__ removed from version string to make
binary update builders happy.
- Utilize pause(9) for __FreeBSDversion >= 700033 (redo 167086).
- Utilize kproc_suspend_check() for __FreeBSDversion >= 800002.
(redo 172836).
- Don't read past end of pVDevice (redo 143787).
- Make sure that controller and channel are initialized (redo 169823).
- Don't include cam/cam_xpt_periph.h (redo 158177).

MFC After: 3 days

Perhaps a better fix- make the called function do the (possible never reached)
initialization. Do a token amount of style cleanup.

Poked by: bde

Make gcc 4.2 happy by initiatlizing controller && channel prior
to a call to a function which *might* then initialize them.

MFC after: 3 days

Use pause() rather than tsleep() on stack variables and function pointers.

Import new version of the HPTMV driver from Highpoint. The major change
here is the support for amd64, as well as possible support for PAE. Many
thanks to Highpoint for continuing to support FreeBSD.

Obtained from: Steve Chang @ Highpoint
MFC After: 3 days.

Clean up the botching of the previous repo-copy. Reference the included
headers from the correct location.

Submitted by: Tai-hwa Liang

Move all of the hptmv files to /sys/dev/hptmv so that they won't be mistaken
for being on a CVS vendor branch. The files were moved via a repo-copy.

avoid sneaky double free

Noticed by: Coverity Prevent analysis tool
Reviewed by: scottl

Import the HighPoint RocketRAID 182x driver. Thanks to HighPoint for
providing the original driver, and thanks to IronSystems for providing
hardware for testing.