locale: Fix 24 hour format for DateTimeFormats.

Signed-off-by: Augustin Cavalier <waddlesplash@gmail.com>
Fixes #12575. I checked with PulkoMandy on IRC before merging this,
and fixed some whitespace violations of the coding style.

Update icu x86_64 package with namespace renaming enabled.

"Renaming" means the icu namespace is suffixed with the version number,
atm icu_55. Using "renaming" allows to use two different versions of ICU,
thus easing upgrades. For instance haikuwebkit uses a current version of ICU,
while the system uses a newer one after an upgrade.

* Replace all uses of the icu namespace in our public headers, with a macro
defaulting to icu. As the namespace is only used for private fields pointers,
there should be no impact.
* Locale kit *.cpp have to import the macro from <unicode/uversion.h> *before*
including any locale headers. Ditto for a Time preferences cpp file. This way,
the correct current icu namespace is referenced.
* Fixes bug #12057.

Reimplement BDateTimeFormat using ICU support

* Avoid hardcoding the format to "date, time"
* Allows using DateTimePatternGenerator to create custom formats from a
set of fields.

* add predicate FormattingConventions::AreCountrySpecific()

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42666 a95241bf-73f2-0310-859d-f6bbb57e9c96

* update (not-so-)optional package ICU to 4.8.1, which contains interesting stuff
for message formatting
* adjust LocaleKit to use namespace 'icu', as ICU has been configured to no longer
use a version specific namespace
* adjust LocaleKit to general API changes in ICU 4.8
Note: all software using ICU (like WebPositive) needs to be rebuilt!
Note: the ICU package for PPC needs to be updated before it can be used!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42638 a95241bf-73f2-0310-859d-f6bbb57e9c96

One more monster commit (sorry ...) concerning the Locale Kit:
* extracted new class BFormattingConventions from BCountry, which
manages the formatting conventions from a given locale and
allows to get/set the four different date/time formats supported
by ICU-locales as well as number and monetary formats
* overhauled the Locale preflet:
+ drop editing features for all formats, since I don't think
they do not make much sense to have in a prefs GUI - being
able to select from the existing locales should be good
enough. Please note that you can still change the formats
programmatically in an application.
+ renamed the 'Countries' tab to 'Formatting'
+ the locale formatting conventions list in the 'Formatting'
tab is now hierarchical for easier access (less scrolling)
+ fixed functionality of 'Revert' and 'Defaults' buttons
+ added support for using the month/day-names of your preferred
language during date formatting
* adjusted BLocale to ask BFormattingConventions for the current
formats when formatting dates and times and to offer 4
different format styles (full, long, medium and short).
* adjust all classes formatting dates/times to pick the
appropriate format style
* BLocaleRoster no longer directly archives/unarchives the
individual formatting conventions but delegates that to
BFormattingConventions


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39123 a95241bf-73f2-0310-859d-f6bbb57e9c96

Update icu x86_64 package with namespace renaming enabled.

"Renaming" means the icu namespace is suffixed with the version number,
atm icu_55. Using "renaming" allows to use two different versions of ICU,
thus easing upgrades. For instance haikuwebkit uses a current version of ICU,
while the system uses a newer one after an upgrade.

* Replace all uses of the icu namespace in our public headers, with a macro
defaulting to icu. As the namespace is only used for private fields pointers,
there should be no impact.
* Locale kit *.cpp have to import the macro from <unicode/uversion.h> *before*
including any locale headers. Ditto for a Time preferences cpp file. This way,
the correct current icu namespace is referenced.
* Fixes bug #12057.

Reimplement BDateTimeFormat using ICU support

* Avoid hardcoding the format to "date, time"
* Allows using DateTimePatternGenerator to create custom formats from a
set of fields.

* add predicate FormattingConventions::AreCountrySpecific()

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42666 a95241bf-73f2-0310-859d-f6bbb57e9c96

* update (not-so-)optional package ICU to 4.8.1, which contains interesting stuff
for message formatting
* adjust LocaleKit to use namespace 'icu', as ICU has been configured to no longer
use a version specific namespace
* adjust LocaleKit to general API changes in ICU 4.8
Note: all software using ICU (like WebPositive) needs to be rebuilt!
Note: the ICU package for PPC needs to be updated before it can be used!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42638 a95241bf-73f2-0310-859d-f6bbb57e9c96

One more monster commit (sorry ...) concerning the Locale Kit:
* extracted new class BFormattingConventions from BCountry, which
manages the formatting conventions from a given locale and
allows to get/set the four different date/time formats supported
by ICU-locales as well as number and monetary formats
* overhauled the Locale preflet:
+ drop editing features for all formats, since I don't think
they do not make much sense to have in a prefs GUI - being
able to select from the existing locales should be good
enough. Please note that you can still change the formats
programmatically in an application.
+ renamed the 'Countries' tab to 'Formatting'
+ the locale formatting conventions list in the 'Formatting'
tab is now hierarchical for easier access (less scrolling)
+ fixed functionality of 'Revert' and 'Defaults' buttons
+ added support for using the month/day-names of your preferred
language during date formatting
* adjusted BLocale to ask BFormattingConventions for the current
formats when formatting dates and times and to offer 4
different format styles (full, long, medium and short).
* adjust all classes formatting dates/times to pick the
appropriate format style
* BLocaleRoster no longer directly archives/unarchives the
individual formatting conventions but delegates that to
BFormattingConventions


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39123 a95241bf-73f2-0310-859d-f6bbb57e9c96