Improve timezone names returned by BTimeZone.

* Use TimeZone::SHORT specifier instead of SHORT_COMMONLY_USED, since
the former yields more appropriate (textual) values. Strangely enough,
it used to be the other way around, which is why we didn't used SHORT
in the past.

Next step of Locale Kit refactoring:
* BLocale now keeps language and country completely separate and
mixes the formatting conventions into the current language's locale
when formatting dates and times (needs to be done for number- and
currency-formatting, too, since the digits may not be in the
preferred language)
* optimized fetching of the flag icons such that they are all loaded
in one go (by the locale roster) - this alone speeds up the Locale
preflet considerably
* worked on fixing the language confusion in the Locale preflet
* fixed a couple of bugs in the Locale preflet that would lead to
illegal characters being displayed in the date-subpart menus


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39013 a95241bf-73f2-0310-859d-f6bbb57e9c96

* changed BTimeZone to use BLanguage instead of BLocale, as that what represents
the locale of messages (timezone names in this case)

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38340 a95241bf-73f2-0310-859d-f6bbb57e9c96

* added support for getting the names of a timezone for a specific locale
(not currently used anywhere, but should be part of the BTimeZone interface)

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38333 a95241bf-73f2-0310-859d-f6bbb57e9c96

Optimized Time preflet:
* use upon-demand initialization in BTimeZone to avoid unnecessary work
* renamed BTimeZone::Code() to BTimeZone::ID() and adjusted all callers
* avoid using BCountry in the Time preflet for the time being, this means
the icon-flags are gone for now (but they could be re-added if the demand
is pressing ;-)
* group the timezones by regions and then by country instead
The performance improvement is considerable and I personally think the new grouping is an improvement, too. Please share your thoughts!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38322 a95241bf-73f2-0310-859d-f6bbb57e9c96

* added support for all the different names (std/dst, long/short) and daylight
support to BTimeZone

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37933 a95241bf-73f2-0310-859d-f6bbb57e9c96

* do not leak ICU timezone
* minor cleanup

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37876 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 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

Improved the Time preflet (still not working properly, though)
* basically rewrote TimeZone to sport a nicer to use interface
* adjusted all users of TimeZone accordingly
* changed TZDisplay to show the Date next to the label, in
order to avoid that long timezone names draw all over it
* the timezone listview is now properly sorted according
to the current language (using BCollator)
* fixed a couple of bugs (overflows, etc.) that caused
incorrect GMT offsets to be used during computations


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37813 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Fix wrong function call in TimeZone.Code() leading to a localized string being returned instead of the expected code.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37790 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Rewrote the timezone selection part of the time preflet to make use of ICU instead of our custom TZData.
* Not completely working yet, hte POSIX API isn't very happy about ICU timezone names.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37758 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Bcountry : private methods start with underscore. The timezone list isnow actually a list of BTimeZone objects, that holdsall the needed info, not only the code. Also tweak the listing code to
remove duplicatesfromthe list generated by ICU.
* BTimeZone : remove Code, rename Name to GetName. The class is likely to change again for further optimization.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37719 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Add a BTimeZone class for handling time zones.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37718 a95241bf-73f2-0310-859d-f6bbb57e9c96

Improve timezone names returned by BTimeZone.

* Use TimeZone::SHORT specifier instead of SHORT_COMMONLY_USED, since
the former yields more appropriate (textual) values. Strangely enough,
it used to be the other way around, which is why we didn't used SHORT
in the past.

Next step of Locale Kit refactoring:
* BLocale now keeps language and country completely separate and
mixes the formatting conventions into the current language's locale
when formatting dates and times (needs to be done for number- and
currency-formatting, too, since the digits may not be in the
preferred language)
* optimized fetching of the flag icons such that they are all loaded
in one go (by the locale roster) - this alone speeds up the Locale
preflet considerably
* worked on fixing the language confusion in the Locale preflet
* fixed a couple of bugs in the Locale preflet that would lead to
illegal characters being displayed in the date-subpart menus


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39013 a95241bf-73f2-0310-859d-f6bbb57e9c96

* changed BTimeZone to use BLanguage instead of BLocale, as that what represents
the locale of messages (timezone names in this case)

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38340 a95241bf-73f2-0310-859d-f6bbb57e9c96

* added support for getting the names of a timezone for a specific locale
(not currently used anywhere, but should be part of the BTimeZone interface)

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38333 a95241bf-73f2-0310-859d-f6bbb57e9c96

Optimized Time preflet:
* use upon-demand initialization in BTimeZone to avoid unnecessary work
* renamed BTimeZone::Code() to BTimeZone::ID() and adjusted all callers
* avoid using BCountry in the Time preflet for the time being, this means
the icon-flags are gone for now (but they could be re-added if the demand
is pressing ;-)
* group the timezones by regions and then by country instead
The performance improvement is considerable and I personally think the new grouping is an improvement, too. Please share your thoughts!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38322 a95241bf-73f2-0310-859d-f6bbb57e9c96

* added support for all the different names (std/dst, long/short) and daylight
support to BTimeZone

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37933 a95241bf-73f2-0310-859d-f6bbb57e9c96

* do not leak ICU timezone
* minor cleanup

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37876 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 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

Improved the Time preflet (still not working properly, though)
* basically rewrote TimeZone to sport a nicer to use interface
* adjusted all users of TimeZone accordingly
* changed TZDisplay to show the Date next to the label, in
order to avoid that long timezone names draw all over it
* the timezone listview is now properly sorted according
to the current language (using BCollator)
* fixed a couple of bugs (overflows, etc.) that caused
incorrect GMT offsets to be used during computations


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37813 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Fix wrong function call in TimeZone.Code() leading to a localized string being returned instead of the expected code.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37790 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Rewrote the timezone selection part of the time preflet to make use of ICU instead of our custom TZData.
* Not completely working yet, hte POSIX API isn't very happy about ICU timezone names.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37758 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Bcountry : private methods start with underscore. The timezone list isnow actually a list of BTimeZone objects, that holdsall the needed info, not only the code. Also tweak the listing code to
remove duplicatesfromthe list generated by ICU.
* BTimeZone : remove Code, rename Name to GetName. The class is likely to change again for further optimization.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37719 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Add a BTimeZone class for handling time zones.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37718 a95241bf-73f2-0310-859d-f6bbb57e9c96