include: 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 $FreeBSD$: one-line .h pattern

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

include: 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.

Commit log from Dragonfly:

FreeBSD extended ctypes to include numbers (e.g. isnumber()) but never
actually implemented it. The isnumber() function was equivalent to the
isdigit() function in every case.

Now that DragonFly's ctype source files have number definitions, the
number ctype can finally be implemented. It's given a new flag _CTYPE_N.
The isalnum() and iswalnum() functions have been changed to use this
flag rather than the _CTYPE_D digit flag.

While isalnum(), isnumber(), and their wide equivalents now return
different values in locale cases, the ishexnumber() and iswhexnumber()
functions are unchanged. They are still aliases for isxdigit() and
iswxdigit().

Also change ctype.h for isdigit and isxdigit to use sbistype like the
other functions.

Obtained from: dragonfly

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.

Remove the Berkeley clause 3's.
Add a few $FreeBSD$

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

Back out not human readable optimization in prev. commit which shown
to generate 3bytes longer opcode.

Micro-optimization of prev. commit, change
(_c < 0 || _c >= 128) to (_c & ~0x7F)

Small improvement for __isctype(): don't use __mb_sb_limit but
hardcode 128 here instead, since default locale never define anything
above 127 char.

The problem is: currently our single byte ctype(3) functions are broken
for wide characters locales in the argument range >= 0x80 - they may
return false positives.

Example 1: for UTF-8 locale we currently have:
iswspace(0xA0)==1 and isspace(0xA0)==1
(because iswspace() and isspace() are the same code)
but must have
iswspace(0xA0)==1 and isspace(0xA0)==0
(because there is no such character and all others in the range
0x80..0xff for the UTF-8 locale, it keeps ASCII only in the single byte
range because our internal wchar_t representation for UTF-8 is UCS-4).

Example 2: for all wide character locales isalpha(arg) when arg > 0xFF may
return false positives (must be 0).
(because iswalpha() and isalpha() are the same code)

This change address this issue separating single byte and wide ctype
and also fix iswascii() (currently iswascii() is broken for
arguments > 0xFF).
This change is 100% binary compatible with old binaries.

Reviewied by: i18n@

Let GCC know that ___runetype(), ___tolower() and ___toupper() are pure
functions, allowing it to generate better code for the <ctype.h> and
<wctype.h> functions. For example, it can now keep _CurrentRuneLocale
in a register across calls to these functions, and can delete calls to
___runetype() if the result is already known or not used.

Implement wcwidth() as an inline function.

Move some internal macros and inlines from ctype.h to a new file, _ctype.h,
which has been repo-copied from ctype.h. This will allow us to remove
namespace pollution from <wctype.h> and to make wcwidth() an inline function
without introducing more pollution.

Now that <runetype.h> no longer brings in namespace pollution,
bring back the inline functions for the !__BSD_VISIBLE case.

Prefix the names of members of _RuneLocale and its sub-structures
with ``__'' to avoid polluting the namespace. This doesn't change the
documented rune interface at all, but breaks applications that accessed
_RuneLocale directly.

Make isblank() visible in the C99 namespace.

PR: 63371
Submitted by: Stefan Farfeleder

Solve the <runetype.h> pollution problem by disabling inline
optimizations when a standard has been requested, except when the
inline optimizations are also specifically requested.

o Fix namespace scope issues in <ctype.h> by using the relatively new
visibility primitives.
o Implement _tolower() and _toupper() POSIX.1-2001 (XSI) macros in
<ctype.h>.
o Reduce pollution in <runetype.h> by removing typedefs and using
implementation namespaced types.
o Add a typedef in <rune.h> to compensate for <runetype.h> losing its
typedefs.

Reviewed by: bde

o Merge <machine/ansi.h> and <machine/types.h> into a new header
called <machine/_types.h>.
o <machine/ansi.h> will continue to live so it can define MD clock
macros, which are only MD because of gratuitous differences between
architectures.
o Change all headers to make use of this. This mainly involves
changing:
#ifdef _BSD_FOO_T_
typedef _BSD_FOO_T_ foo_t;
#undef _BSD_FOO_T_
#endif
to:
#ifndef _FOO_T_DECLARED
typedef __foo_t foo_t;
#define _FOO_T_DECLARED
#endif

Concept by: bde
Reviewed by: jake, obrien

Move internal defines from here to libc/locale/wcwidth.c

Properly define SWIDTH1, add autowidth (was SWIDTH1)

Add swidth definition for wchar stuff

Submitted by: clkao@clkao.org
Reviewed by: keichii
Obtained from: NetBSD
MFC after: 1 month

Breath deep and take __P out of the system include files.

# This appears to not break X11, but I'm having problems compiling the
# glide part of the server with or without this patch, so I can't tell
# for sure.

Makes __istype() an inline (and a non inlined) function to avoid C++
compile issues. std::isspace(' ') was expanding to std::(!!_maskrune...)
which would cause a C++ compile error. Making __istype() an inline
causes the expansion to be std::__istype() instead, which is valid.

Reviewed by: jkh

There is a problem in that one cannot use ctype.h at the same time as parts
of the C++ stdlib. Our ctype.h uses symbols of the form _<X> to denote the
various character classes. Our ctype.h also extends the usual ctype.h
offering by adding the "_T" (special) class. Problem is parts of the STL
also use the symbol "_T" as its parameterized type. These two uses are
incompatible.

Thus change the form of the symbols used in ctype to something that fixes
the current problem and is less likely to cause conflicts in the future.

Requested by: Tomoaki NISHIYAMA <tomoaki@biol.s.u-tokyo.ac.jp>
Ok'ed by: JKH

Back up following macros by functions: ishexnumber, isideogram, isnumber,
isphonogram, isrune, isspecial. Fix ordering.

Reviewed by: bde

Oops, fix typo in istype definition

1) Bring '!!' back since we wan't overflow even a char
2) Revive __maskrune, just return mask now
3) Express __istype via !!__maskrune
4) Use __maskrune in digittoint

Oops, wrong version of digittoint fix was commited, step back to v1.8
instead just remove '!!' to make digittoint() work and re-arrange
things a little

Fix digittoint broken long ago
Redesign to allow digittoint work for runes too
__maskrune removed, __istype become a macro, __runeflags added

Bandaid for the build-breaking reference to _BSD_RUNE_T_. I'm not sure
that this is right, but the old reference defaintely was not.

Submitted by: Sin'ichiro MIYATANI / Phase One, Inc <siu@phaseone.co.jp>
Basic support for the Shift JIS encoding of japanese.
(and one tiny typo fixed in a comment)

Fixed longstanding namespace convolution involving rune_t vs wchar_t.
If _ANSI_SOURCE or _POSIX_SOURCE is defined, then <ctype.h> had to
be included before <stddef.h> or <stdlib.h> to get rune_t declared.
Now rune_t is declared perfectly bogusly in all cases when <ctype.h>
is included.

This change breaks similar (but more convoluted) convolutions in the
stddef.h in gcc distributions. Ports of gcc should avoid using the
gcc headers.

Slightly simplify inlined functions

Fix isspecial/isphonogram, they was swapped
Remove EOF hack, now it is recognized per ANSI/POSIX
Add upper bounds check
Handle all negative chars inside locale functions

Reviewed by: ache and wollman (long ago)

Fix numerous ANSI conformance bugs and other nits.

ctype.h:
o There were no prototypes behind the macros (conformance bug).
o isascii() didn't have enough parentheses (plain bug).
o tolower() and toupper were always static inline (conformance
bug? You could undef them and take their address, but this
gave different addresses in different modules. You couldn't
undef them and declare them (correctly) again). <stdio.h>'s
treatment of putc() shows one way to handle this problem,
but it only works because the putc() macro is allowed to
reevaluate its args. I used a hack controlled by
_EXTERNALIZE_CTYPE_INLINES_ to get <ctype.h> to generate the
code (the previous hack involving _ANSI_LIBRARY_ goes away).
This has the advantage that the core of the functions is only
written down once and the disadvantage that another layer of
functions is required. The extra layer goes away if inline
functions are used, leaving only the problem of understanding
why there are functions named toupper(), __toupper and
___toupper() as well as a macro named toupper.
o Nothing seems to define _USE_CTYPE_LIBRARY_. Eliminate it
o Let the user set _USE_CTYPE_INLINE_ and _DONT_USE_CTYPE_INLINE_
for full control over inlining.
o The args for the inline functions didn't have enough
underscores (conformance bug).
o The formatting and ordering was inconsistent (style bug).
o TODO: fix conformance bugs brought by including <runetype.h>.

Move inline args out of user namespace.
Obtained from: 1.x

Remove EOF handling after Bruce explanation. This step returns
to 4.4 way to not allow EOF in ctype and now all signed chars
(including '\377' which becomes EOF) converted to (unsigned char) properly.

Handle EOF case in all macros by ANSI standard.
Cast all ints < 0 to (unsigned char) to fix common problem
with sign extention on signed char.

BSD 4.4 Lite Include Sources