Merge ^/head r303250 through r304235.

MFhead @ r304061

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

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

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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 @<va

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)

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