use .IsSet() instead if .Get() != NULL

Change-Id: Ia2b7a719fd398e78cc3b11d4f7b02cb81179f65f
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3488
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>

Prepare for ICU update

- libicule and libiculx do not exist anymore in newer ICU versions
(harfbuzz replaces them), but we didn't actually use them, so remove
them from the build feature and fro

Prepare for ICU update

- libicule and libiculx do not exist anymore in newer ICU versions
(harfbuzz replaces them), but we didn't actually use them, so remove
them from the build feature and from the package dependencies
- Add namespace usage marcos since the newer ICU packages put ICU things
in a namespace, making it easier to have multiple versions of ICU used
side by side.

No functional change intended, but this makes it possible to build the
code with either ICU 57 (for gcc2) or 66 (for other architectures).

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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 o

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.

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B*Format: make immutable and remove locking

The language and formatting conventions can now only be set when
creating the objects. This removed the needs for locking them when
formatting to avoid so

B*Format: make immutable and remove locking

The language and formatting conventions can now only be set when
creating the objects. This removed the needs for locking them when
formatting to avoid some other thread changing the format while it's
being used.

Adjust tests and DeskBar TimeView to the API changes.

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DateTimeFormat: set the locale to the pattern generator.

Unfortunately this isn't enough to fix the bug shown by the test just
added.

DateTimeFormat: handle custom 24 hours clock.

The "j" format pattern selects a 12 or 24 hours clock automatically
depending on the locale, but it doesn't work when the format is forced
in the locale

DateTimeFormat: handle custom 24 hours clock.

The "j" format pattern selects a 12 or 24 hours clock automatically
depending on the locale, but it doesn't work when the format is forced
in the locale preflet or through the BFormattingConventions API. So we
manually pick either K or H depending on that setting.

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DateTimeFormat: use the proper format for timezone.

V used to mean the same as z, but was repurposed to someone else. So
actually use z which is what we want.

Fixes #11325.

Reimplement BDateTimeFormat using ICU support

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

Move DateTimeFormat and NumberFormat out of BLocale

* ... and adjust all callers
* Remove NumberFormatImpl: we rely on ICU to provide this and it can be
fully wrapped into the C++ file. The class wa

Move DateTimeFormat and NumberFormat out of BLocale

* ... and adjust all callers
* Remove NumberFormatImpl: we rely on ICU to provide this and it can be
fully wrapped into the C++ file. The class was a stub anyway.
* "Monetary" format is included in NumberFormat for now. There may be a
more generic solution to handle monetary and BTimeUnitFormat (and other
arbitrary units)

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* style adjustments

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38426 a95241bf-73f2-0310-859d-f6bbb57e9c96

Largish cleanup sweep concerning the Locale Kit (sorry it got so big):
* refactored private/mutable stuff out of LocaleRoster into MutableLocaleRoster
* moved management of Locale/Time settings file

Largish cleanup sweep concerning the Locale Kit (sorry it got so big):
* refactored private/mutable stuff out of LocaleRoster into MutableLocaleRoster
* moved management of Locale/Time settings file and broadcasting of any changes
out of preflets and into MutableLocaleRoster
* added proper sorting to the listviews of the Locale preflet
* the Time preflet no longer overlaps long timezone names into the actual time
* several fixes with respect to leaking ICU objects, esp. in BCountry
* the locale roster no longer passes out references to its own BCountry object,
but uses copies, instead - this makes locking superfluous, as the clients'
BCountry objects can no longer be changed by the setting a new default
country in the locale roster
* removed pretty useless POSIX-style symbol fetching from BCountry - if we
need that at all, it should live in the dedicated formatter classes
* adjusted readonlybootprompt, dstcheck and Deskbar to the changed Locale API
* refactored existing Time-formatter into TimeUnitFormat and DurationFormat
(the latter of which is now used by AboutSystem)
* added stubs for Date, DateTime and Time formatters
* lots of coding style fixes throughout the Locale Kit and the Locale and Time
preflets
This will probably break most external apps making use of the Locale Kit - it
does break WebPositive.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37831 a95241bf-73f2-0310-859d-f6bbb57e9c96

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