Fix various issues with Chinese locales:

- Change short weekday names to use only one Chinese character.
(note: this is a somewhat misunfortunate compromise due to the fact
that some applications are using short buffer for weekday names,
and in ~1905 when 星期 system was created to replace the traditional
七曜 system, which can use 日月火水木金土 to represent Sunday through
Saturday with just one character without any confusion).
- for zh_CN locales: use Arabic numerals for month names, matching the
practice of all other CJK locales
- Regenerate zh_CN.{GB2312,GBK} locales from zh_CN.UTF-8.

Reported by: ygy
Reviewed by: kevlo
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D18689

Revert r304192 to fix short month names and replace %b with %_m in date_fmt
for Chinese locales.

As mentioned in the commit message of r289041, nl_langinfo(ABMON_*) only
returned numbers when using a Chinese locale, this causes problems in
applications that put the short month name and the day of the month together.

Spotted by: Ting-Wei Lan <lantw44 gmail com>

Fix ko_KR, zh_CN, zh_HK, and zh_TW locales. r304045 did not fully revert
date/time formats for these locales.

Set date and time formats back to what they were before CLDR

While CLDR brings us a good and up to date source data to generate locales for
all databses we are using for locales, it is not the case of LC_TIME. Where it
does not defines the informations we need.

Put back all the date and time formats from the old locales.
Make it statically for now (in order to be able to merge it now into
11.0-RELEASE). The generation tools will be updated soon.

That gives us time to properly work on LC_TIME during the 12 timeframe.

While here fix abbreviated month for af_ZA (which are already fixed in CLDR
data upstream)

In locales where AP/PM was not defined before CLDR data, remove again the AP/PM
informations

For locales where AP/PM was defined before CLDR data, keep the CLDR information
which was properly translated.

MFC after: 3 days

Posixify the locales name for variants

For all locales with variants:
- if no ambiguity on the locale (only one variant) just use the regular name
- if ambiguity, pick one as default and append @<variant> to the others
respecting POSIX

As a result:
- All the 3 components locales added recently are renamed to the usual 2
components version for all but sr_RS.UTF-8
- Set sr_RS.UTF-8 to the cyrillic variant
- Add sr_RS.UTF-8@latin
- Remove the symlinks aliases they were created to represent the 2 components
version as aliasas and are now useless
- Update the OptionalObsoleteFiles.inc and ObsoleteFiles.inc to reflect those
changes

Discussed with: ache@
Approved by: re@ (gjb)

Fix short month names and replace %b with %_m in date_fmt for Chinese
locales.

When using a Chinese locale, such as zh_TW.UTF-8 or zh_CN.UTF-8,
nl_langinfo(ABMON_*) only returned numbers. For instance,
nl_langinfo(ABMON_1) returns 1, nl_langinfo(ABMON_2) returns 2, and
so on.

This causes problems in applications that put the short month name
and the day of the month together. For example, 'Apr 14' in English
becomes '414日' in Chinese on the top bar of GNOME Shell.

This problem may be resolved by appending '月' to all short month
names and replacing %b with %_m in date_fmt. ja_JP.UTF-8 already
does this, and this matches the en_US.ISO8859-1 behavior, which
returns 'Oct'. The GNU C Library also returns values with '月'
appended.

PR: 199441
Submitted by: Ting-Wei Lan <lantw44 gmail com>
MFC after: 2 weeks

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.

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

Comments fixing
1) Back out "month names" -> "months names" and fix few such cases which
are wrong initially
2) "weekdays names" -> "weekday names"

Noted by: des [1]

Comments fixing
"month names" -> "months names"
typo
"Long months names (alternative)" or "in alternative form" ->
"(without case ending)"
"Long months names" -> "Long months names (as in a date)"
to not confuse developers on what purpose those sections are

Add UTF-8 versions of all the currently supported system locales. Most of
the hard work was done by Hye-Shik Chang in the misc/utf8locale port; I made
a few minor adjustments and merged the makefiles.

PR: 44307