sccs: Manual changes

For the uncommon items: Go through the tree and remove sccs tags that
didn't fit any nice pattern. If in the neighborhood, other SCM tags were
removed when they were detritis of long-ago CVS somehow in the early
mists of the project. Some adjacent copyrights stringswere removed (they
duplicated the copyright notices in the file). This also removed
non-standard formations of omission of SCCS tags (usually by adding an
extra #if 0 somewhere.

After this commit, a number of strings tagged with the 'what' @(#)
prefix remain, but they are primarily copyright notices.

Sponsored by: Netflix

Remove $FreeBSD$: two-line .h pattern

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

General further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

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.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by: Jan Schaumann <jschauma@stevens.edu>
Pull Request: https://github.com/freebsd/freebsd/pull/96

getfsent(3) will return NULL on EOF or error.

MFC after: 2 weeks.

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

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

Convert quotacheck to use new quotafile functions in libutil.
Still to come, conversion between 64-bit and 32-bit quotafile formats.

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

Drag this code kicking and screaming into the twenty-first century.

Sync up quotacheck's preen.c with fsck's. This makes quotacheck
process parallel checks in the same way as fsck, since fsck supports
pass numbers other than 0, 1 or 2. Without this, quotacheck would
ignore file systems with pass numbers > 2.

The -l (maxrun) option is now deprecated and can be tuned with pass
numbers in /etc/fstab if needed.

Fix "quotacheck -a" from core dumping on 64 bit systems by correctly
declaring the return value used by the routines in preen.c as a pointer
type, instead of "int", which was causing the pointer to be truncated.

Tested by: marck
Approved by: re (bmah)

Remove advertising clause from University of California Regent's license,
per letter dated July 22, 1999.

Approved by: core, imp

Use __FBSDID() to quiet GCC 3.3 warnings.

s/filesystem/file system/g as discussed on -developers

Fixup preen.c to match its new residence.

The blockcheck() function is still pulled from fsck_ffs, it probably should
live in libufs.

o __P removed
o ansi function prototypes
o unifdef -D__STDC__
o __dead2 on usage prototype
o remove now-bogus main prototype

Remove 'register' keyword.
It does not help modern compilers, and some may take some hit from it.
(I also found several functions that listed *every* of its 10 local vars with
"register" -- just how many free registers do people think machines have?)

Spelling

Additions to run checks on live filesystems. This change will not
affect current systems until fsck is modified to use these new
facilities. To try out this change, set the fsck passno to zero
in /etc/fstab to cause the filesystem to be mounted without running
fsck, then run `fsck_ffs -p -B <filesystem>' after the system has
been brought up multiuser to run a background cleanup on <filesystem>.
Note that the <filesystem> in question must have soft updates enabled.

Reviewed by: rwatson, bp
Approved by: rwatson
Obtained from: NetBSD-current source tree

The beginnings of the fsck wrappers stuff from NetBSD. This particular commit
brings a newly repo-copied sbin/fsck_ffs/ (from sbin/fsck/) into fsck wrappers
mode.

A quick overview (the code reflects this):

* Documentation changed to reflect fsck_ffs instead of fsck
* Simply acts on a single filesystem, doesn't try to do any multiple filesystem
magic - this is done by the fsck wrappers now

And then specific to fsck_ffs:

* link to /sbin/fsck_4.2bsd and /sbin/fsck_ufs. This is because right now
the filesystem is of type ufs not ffs, and that during autodetection the
labeltype rather than the VFS type is used - this is because when doing
an autodetection of filesystem type in the fsck wrapper program, it does
not have any link between label type (4.2bsd, vinum, etc) and VFS string.

Note that this shouldn't break a build since the required buildworld Makefile
magic and import of the fsck wrapper code into src/sbin/fsck/ will happen
in a seperate commit.

Make fsck(8) do a MNT_RELOAD after cleaning for all read-only mounted
filesystems, not just for the root fs.

Reviewed by: mckusick
Submitted by: Paul Saab <ps@yahoo-inc.com>

Make fsck even more char/blk dev tolerant.

Allow root-reloading also for chr devices.

$Id$ -> $FreeBSD$

Also check against chardevs when looking for root.

Cosmetic and documentation changes brought from earlier FreeBSD versions.
(e.g. RCS Id:)

Reviewed by: Don Lewis <Don.Lewis@tsc.tdk.com>
Submitted by: Kirk McKusick <mckusick@McKusick.COM>
Obtained from: Mckusick, BSDI and a host of others

This exactly matches Kirks sources imported under the
Tag MCKUSICK2. These are as supplied by kirk with one small
change needed to compile under freeBSD.

Some FreeBSD patches will be added back, though many have been
added to Kirk's sources already.

Correct use of .Nm. Add rcsid. Remove unused #includes. Use err(3).

Guess the position of the drive number in the device name better so
that `fsck -p' doesn't check multiple slices on the same drive
concurrently. Don't invoke undefined behaviour when searching for
the drive number in strange device names.

PR: 6129
Reviewed by: phk
Submitted by: Yuichi MATSUTAKA <matutaka@osa.att.ne.jp>, but rewritten
by me.

Finished (?) merging with Lite2: cleaned up #include mess.

Fixed style bugs in FreeBSD changes.

Merge from Lite2. Note that Lite2 has it's own filesystem clean check
skipping code that overrides ours sooner. One should be eliminated,
but for now it works.

Don't give up just because we cant find the blkdev that corresponds
to the name given as a chardev.

Allow the specification of a mountpoint, and resolve it s disk device
using the fstab.

Closes PR bin/129.

Submitted by: jmg@nike.efn.org (John-Mark Gurney)

Remove trailing whitespace.

Submitted by: phk, added to by bde

Fix all the warnings from `gcc -Wall'.

BSD 4.4 Lite sbin Sources

Note: XNSrouted and routed NOT imported here, they shall be imported with
usr.sbin.