Add C.UTF-8

branches: 1.12.26; 1.12.28;
Provide UTF-8 variants for all existing locales. The data is derived
from the Unicode Common Locale Data Repository.

Convert non-UTF-8 versions from the UTF-8 version using iconv and some
ad-hoc transliterations using sed.

Use EUR as currency_symbol in ISO8859-1.

Invert the Norwegian handling. no_NO is an alias for nb_NO as the latter
is used e.g. in CLDR.

Provide the Serbian locales in both Cyrilic and Latin script versions.
The alias is choosen based on the character set for the non-UTF-8 case
and Cyrillic is the default for UTF-8.

branches: 1.11.8; 1.11.14;
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.

branches: 1.10.2;
add alias for XFree86 compatibility.

Add some more LC_TYPE aliases. OK'ed by tnozaki.

branches: 1.8.10; 1.8.12; 1.8.14;
add tr_TR.ISO8859-9 locale.

add nn_NO(Nynorsk) and nb_NO(Bokmal) locale.

add zh_HK.Big5-HKSCS locale, derrived from FreeBSD.

add kk_KZ.PT154 locale and iconv support for PTCP154.

1. remove duplicated entry(et_EE.UTF-8).
2. add missing LC_MESSAGES alias.
during cvs diff -r1.2, following locale aliases are introduced:
+ af_ZA.UTF-8
+ be_BY.UTF-8
+ en_NZ.UTF-8
+ et_EE.UTF-8
+ eu_ES.UTF-8
+ pt_BR.UTF-8
+ ro_RO.UTF-8
+ sr_YU.UTF-8 <- en_US.UTF-8
+ zh_CN.GB2312 <- zh_CN.eucCN (for Linux/FreeBSD compatibility)

add following locales:
af_AZ.ISO8859-1/15
be_BY.ISO8859-5
en_NZ.ISO8859-1/15
et_EE.ISO8859-15
eu_ES.ISO8859-1/15
pt_BR.ISO8859-1
ro_RO.ISO8859-2
sr_YU.ISO8859-2/5
ukUA.CP1251/ISO8859-5

Remove support for ALIASES in share/locale/ctype/Makefile, which
created symlinks in the filesystem. Put the one existing alias
(zh_TW.BIG5) into the newer locale.alias file.

add the default locale.alias.