sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

sys/dev: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

sys/dev: minor spelling fixes.

Most affect comments, very few have user-visible effects.

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

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

- Import the HEAD csup code which is the basis for the cvsmode work.

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.

Start each of the license/copyright comments with /*-, minor shuffle of lines

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