Remove copyright strings ifdef'd out

We've ifdef'd out the copyright strings for some time now. Go ahead and
remove the ifdefs. Plus whatever other detritis was left over from other
recent removals. These copyright strings are present in the comments and
are largely from CSRG's attempt at adding their copyright to every
binary file (which modern interpretations of the license doesn't
require).

Sponsored by: Netflix

usr.bin: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

Remove $FreeBSD$: two-line .h pattern

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

cleanup documentation

throw an error if reading from stdin failed

enable to configure the locate path length at compile time

The length has not changed and is 1024 chars (equals PATH_MAX).

PR: 201243
Submitted by: Willem Jan Withagen <wjw@digiware.nl>

switch to 64 bit integers for counting bigrams

This fixes an integer overflow for very large partitions around 35 billion
filenames (>2PB). However, in an artificially worst case it may occurs
by only 17 mio filenames on a partition.

locate: change from BSD-4-clause to BSD-3-clause

We have the authorization from the University of California to remove
the advertising clause for a while, wosch@ who also hold a copyright
on this code also approved the relicensing

Approved by: wosch@
MFC after: 3 days

Convert `cap_enter() < 0 && errno != ENOSYS` to `caph_enter() < 0`.

No functional change intended.

spdx: initial adoption of licensing ID tags.

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.

Initially, only tag files that use BSD 4-Clause "Original" license.

RelNotes: yes
Differential Revision: https://reviews.freebsd.org/D13133

Capsicumize some trivial stdio programs

Trivially capsicumize some simple programs that just interact with
stdio. This list of programs uses 'pledge("stdio")' in OpenBSD.

No objection from: allanjude, emaste, oshogbo
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D8307

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

Various changes to make locate compilable with WARNS=6. Note that there
is still one issue on FreeBSD/arm (signed vs unsigned char) which prevents
actually bumping this to WARNS=6 - I'm still considering the correct
solution to this issue.

Tested by: make universe

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.

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

Include missing headers.

$Id$ -> $FreeBSD$

Finish importing Lite2's src/usr.bin, except for ex, diff, grep, mail,
pascal and vmstat.sparc. All changed files on the vendor branch should
already have been imported.

Revert $FreeBSD$ to $Id$

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

8-Bit character support.

Old locate(1) programs still works with the new database format, print
some garbage for 8 bit characters, but don't core (maybe except char 30).

7-Bit Puritan should not notice any difference. Same speed,
Same database size if the database contain only ASCII characters.

Reviewed by: ache

remove unnecessary boundary check, 2x faster
code cleanup

NULL -> '\0'
Submitted by: Bruce, see also c-faq 5.6 and 5.9

delete unused #include <string.h>

code cleanup

bigram
Bigram does not remove newline at end of filename. This
break particulary the bigram algorithm and /var/db/locate.database
grow up 15 %.

Bigram does not check for characters outside 32-127.

The bigram output is silly and need ~1/2 CPU time of
database rebuilding.

old:
locate.bigram < $filelist | sort | uniq -c | sort -nr
^^^^^^^^^^^^^^
this can easy made bigram

new:
bigram < $filelist | sort -nr

code
Code does not check for char 31.
Use a lookup array instead a function. 3 x faster.

updatedb
rewritten
sync with bigram changes

read config file /etc/locate.rc if exists
submitted by: guido@gvr.win.tue.nl (Guido van Rooij)

concatdb - concatenate locate databases
mklocatedb - build locate database

Remove trailing whitespace.

BSD 4.4 Lite Usr.bin Sources