sys: Remove $FreeBSD$: one-line .c comment pattern

Remove /^/[*/]\s*\$FreeBSD\$.*\n/

sym: clean up empty lines in .c and .h files

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.

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

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

- Const'ify firmware and lookup-tables.
- Obsolete redundant inst_name and unit members of struct sym_hcb.
- Fix three more NULL vs. 0 confusions.
- Use device_set_softc(9) to tell the bus layer that this driver
allocates a instance of struct sym_hcb itself.

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

Fix instances of macros with improperly parenthasized arguments.

Verified by: md5

MFC after: 0 days

PR: kern/20895
PR kern/20895:
- Add FE_DAC new feature flag to distinguish between
64 bit PCI addressing (DAC cycles) and 64 bit PCI
interface (64 bit Memory BARs).
- Properly deal with chips that have a 32 bit PCI
interface but support and may generate DAC.
(Only SYM53C895A for now).

PR misc/17584 (at least partially addressed):
- Try detecting hardware combinations that trigger
spurious PCI master parity error detections by the
PCI chip. This work-around is implemented in the
`snooptest' routine and consists in retrying with
PCI master parity checking disabled if such an
error is reported by the PCI chip during this test.

Other:
- Fix a tiny bug in WIDE negotiation that was very
unlikely to be triggerred. The BUS width was wrongly
compared against chip's max. offset.

- Make the NVRAM debug code compile and work.
- Get rid of a fiew uselessly `long' variables
and casts to `long'.
- Estimate the PCI clock for all chips, except
C1010 for now (we should do that for each PCI BUS)
- Refine a couple of C1010 errata work-arounds.
- For now, make sure AIP generation is disabled
for the C1010-66.

This new version adds support for early NCR chips.
53C810 non 'A', 53C815 and 53C825 non 'A' are now
attached by the driver (by default).
The driver uses a different SCRIPTS set based on
MEMORY MOVE instructions for these chips.

2 SCRIPTS sets (firmwares) numbered #1 and #2 are
used for the whole support of the 53C8XX family
to get possible:

- FW #1 : Only based on MEMORY MOVE instructions.
Selected for 810, 815, 825.
- FW #2 : LOAD/STORE based. This is the firmware
also used by previous driver versions.
Selected for other chips.

When both `ncr' and `sym' are configured, `sym'
will now attach all the 53C8XX devices by default.
Previous balancing between `ncr' and `sym' can be
preserved by:

- Either editing sym_conf.h and commenting the
following compile option:
#define SYM_CONF_GENERIC_SUPPORT
(This also saves about 3.5Kb of kernel memory).

- Or setting kernel config option
SYM_SETUP_LP_PROBE_MAP to 64 (bit 0x40)

- Add year 2000 copyright to driver files.
- Set MAX_OFFS driver compile option to 63 (was 64 which is wrong).
- Fix a typo in the SYMBIOS NVRAM layout structure and add field and
bit definition for the support of PIM_NOBUSRESET.
- Report to XPT PIM_NOBUSRESET and PIM_SCANHILO if set by user in NVRAM.
- Negotiate SYNC immediately after WIDE response from the target as
suggested by Justin Gibbs.
- Remove some misleading comment about CmdQue handling by CAM.
- Apply correctly the MAX_WIDE and MAX_OFFS driver options.

- Add device entry for the next generation of C1010 device
(pci dev_id 0x21).
- Start the SCRIPTS processor without resetting the SCSI BUS
at initialization.
- Remove the "Host adapter CCB chain" (got useless given the
new queuing scheme).
- Display correctly the state of SCSI signals, when SCSI BUS
looks bad.
- Cosmetic changes in messages printed out at initialization.
- Notifications and messages on RESET conditions slightly
reworked.
- TEKRAM 24C16 NVRAM support fixed (also reported ok).

Go ahead and take these off the vendor branch as Gerard Roudier is now
a committer and will be maintaining these in the usual manner.

Add $FreeBSD$'s to get them off on the right foot.

* The C1010 stepping B0 (Rev 1) tested OK for DT transfers without the U3EN
broken bit work-around enabled.
* Fixed a bug that made MDP not work. (However, MDP is actually not tested
due to lack of hardware using this feature).
* Chip table changed to support the C1010 B0 w/o the U3EN bit work-around
enabled.
* Add the SYM_SETUP_MAX_LUN, SYM_SETUP_LP_PROBE_MAP (used to tell the
driver about chips that are to be claimed with lower priority than old
PCI bus based driver (typically the ncr)), SYM_SETUP_SCSI_DIFF, and
SYM_SETUP_PCI_PARITY options.

Submitted by: Gerard Roudier <groudier@club-internet.fr>

New `sym' device driver optimized for the Symbios/LSI 53C896/53C895A/53C1010
PCI SCSI controllers. This driver also supports the following Symbios/LSI
PCI SCSI chips: 53C810A, 53C825A, 53C860, 53C875, 53C876, 53C885, 53C895.

However, it does NOT support earlier chips as the following ones: 53C810,
53C815, 53C825.

See README.sym for more details.

Submitted-by: Gerard Roudier <groudier@club-internet.fr>