lib: remove CONSTCOND comment

Since 2021-01-31, lint doesn't need it anymore for the common pattern of
'do ... while (0)'.

Extend ctype classification table to 16bit. Based on patch by
Takehiko Nozaki, with changes to compile fail when using the old names
and to exploit __BUILD_LEGACY

Restore RCS Id lost in previous.

fix PR lib/46781 statically compiled bash makes locale loading fail.
analyzed and patch provided by enami@ nonaka@ obache@ soda@, thanks.
patch modified by me.

Remove code for CITRUS!=yes.

Remove support for the old BSDCTYPE format.

variable must to be nul terminated before "CODESET=foo".
ISO2022 module doesn't understand this and may fail setlocale(3).

null terminate

1. refactoring new locale-db(RuneCT10) loading method with mmap(2).
2. remove unused field from _RuneLocale.
3. localeio(CITRUS=no) can read new locale-db(RuneCT10) now.

1. split runetype_local.h -> runetype_file.h
and remove renameing _Rune* -> _NBRune* namespace protection.

FreeBSD traditionaly exposes struct _Rune* in runetype.h
which included by ctype.h

1. split runetype_local.h -> runetype_file.h
and remove renameing _Rune* -> _NBRune* namespace protection.

FreeBSD traditionaly exposes struct _Rune* in runetype.h
which included by ctype.h. it may cause conflicting type error
in our cross build process, former we use renaming namespace
to avoid this problem, now i reworked more resonable way.

2. merge rune_local.h to runetype_local.h, and remove it.
3. split bsdctype.h -> bsdctype_{file,local}.h

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stop to renaming _CTYPE_* -> _RUNETYPE_*.

more split ctype.h -> sys/ctype_inline.h, sys/ctype_bits.h

rune.h is not public, so merge with rune_local.h

1. hide _CTYPE_PRIVATE section in ctype.h, move them to private header ctype_local.h.
2. do not use _CTYPE_NUM_CHARS macro to read data from LC_CTYPE(old BSDCTYPE style) database.
because 1<<CHAR_

1. hide _CTYPE_PRIVATE section in ctype.h, move them to private header ctype_local.h.
2. do not use _CTYPE_NUM_CHARS macro to read data from LC_CTYPE(old BSDCTYPE style) database.
because 1<<CHAR_BIT is MD, so i added MI macro _CTYPE_CACHE_SIZE(1<<8).
3. remove _NB_CACHED_RUNE macro, use _CTYPE_CACHE_SIZE instead.

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sign-compare fixes

merge christos-time_t

Fixes PR lib/39662, shortcomings in LC_{MONETARY,NUMERIC,TIME,MESSAGES} db format.
ok'ed by core and releng.
(thanks for agc@, snj@ and i'm sorry for long time patience).

[libc]
- localeio.[ch] and

Fixes PR lib/39662, shortcomings in LC_{MONETARY,NUMERIC,TIME,MESSAGES} db format.
ok'ed by core and releng.
(thanks for agc@, snj@ and i'm sorry for long time patience).

[libc]
- localeio.[ch] and lc*.[ch] in src/lib/libc/locale was replaced by
new locale-db implementation using citrus_db backend,
see src/lib/libc/citrus/citrus_lc_*.[ch].
- add citrus_bcs_strtou?l.c. don't use strtou?l locale implementation
internally, because they're locale-aware function.
- add some stubs for multi-locale issue, see {current,global}_locale.c.
- remove some obsolete file, setrunelocale.c, ___runetype_mb.c.
- remove __savectype() from ctypeio.[ch].

[tools]
- mklocale(1): add new option ``-t'' that generates new style
LC_{MONETARY,NUMERIC,TIME,MESSAGES} locale-db format.
- chrtbl(1): added ctypeio.[ch] for __savectype().

[locale-db]
- added en_US.US-ASCII locale.
- removed some shareable locale definition file:
en_US.US-ASCII -> en_US.ISO8859-1, en_US.UTF-8
zh_CN.eucCN -> zh_CN.GB18030
and more...see src/share/locale/*/Makefile.
- remove obsoleted locale sr_YU, added new locale sr_ME, sr_RS.
- change locale name ja_JP.ISO2022-JP* -> ja_JP.ISO-2022-JP*
for X11's locale.alias file alignments.
- fix regression test, wrong wcs?width(3), NAN/INF usage.

i tested release-build following arch:
i386, amd64, hpc{mips,arm,sh}, sparc64, vax.

citrus_lc_*.[ch] also can read old-plain-text style locale-db.
so that backward compatibility is keeped, but lc*.[ch] can't read
new citrus_db'ed locale-db and localeio.c never check sanity,
so forward compatibility is broken ;-<

old mklocale(1) doesn't know -t option, so you have to rebuild toolchain.

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1. add workaround for ctype.h is* funcs problem.
isspace((int)0xA0) should return false under LC_CTYPE=en_US.UTF-8,
see: http://www.freebsd.org/cgi/query-pr.cgi?pr=116363&cat=gnu
2. change __ru

1. add workaround for ctype.h is* funcs problem.
isspace((int)0xA0) should return false under LC_CTYPE=en_US.UTF-8,
see: http://www.freebsd.org/cgi/query-pr.cgi?pr=116363&cat=gnu
2. change __runtable_to_netbsd_ctype() as reentrant.

patch ok'ed by tshiozak-san, thanks!

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Coverity CID 571: Remove dead code.

Coverity CID 778: Avoid NULL deref.

WARNS=4

Need namespace.h for internal names of strdup, strlcpy.

Make this compile, and, as a side-effect, LP64 clean.

kill strcpy

KNF