libc/locale: Nix needless char casts.

These appear to have been added to pacify a spurious warning by lint,
which no longer warns about it anyway.

No functional change intended. No binary change t

libc/locale: Nix needless char casts.

These appear to have been added to pacify a spurious warning by lint,
which no longer warns about it anyway.

No functional change intended. No binary change to aarch64 libc.

Prompted by code inspection around PR lib/58319.

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cast CHAR_MAX to (char) for unsigned character machines

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

merge christos-time_t

1. reworking PR lib/40317:
libnbcompat already contains empty fparseln.lo
so previous fix doesn't work correctly.
i've just added broken fparseln check to configure script.

2. reworking cross build

1. reworking PR lib/40317:
libnbcompat already contains empty fparseln.lo
so previous fix doesn't work correctly.
i've just added broken fparseln check to configure script.

2. reworking cross build breakage under FreeBSD/MacOS X.
FreeBSD/MacOS X still have public /usr/include/runetype.h
derived from 4.4BSD-Lite. so i renamed out private header from
src/lib/libc/locale/runetype.h to src/lib/libc/locale/runetype_local.h
to solve this problems.

3. fix build breakage when CITRUS=no was set.

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define __UNCONST for OSes that don't have it when building tools/mklocale

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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