BCountry: add a GetPreferredLanguage method.

The APIs for this were introduced in ICU 63, so we'll need an update.
ICU 63 does not build with gcc2, so this method is disabled there.

Change-Id: Iabe49509ed6d4e578560d497d3ca336a97db4625
Reviewed-on: https://review.haiku-os.org/c/haiku/+/1874
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>

HaikuBook: fix part of the warnings marked by Doxygen

I spotted some warnings when I upgraded from Doxygen 1.18.13 to 1.18.17.
The new warnings are useful, they point out imbalances in grouping, as
well as unclosed comment blocks. Coincidentally, this fixes #13338

BCountry: add SetTo and InitCheck.

Change-Id: I5fbc2a1c0e735d6edeb23672017bb64d1b3f4390
Reviewed-on: https://review.haiku-os.org/c/haiku/+/1872
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

Update Locale Kit docs.

Add \since to each method. This was pretty easy to figure out since
the whole kit exists only in Haiku.

Fix BCountry::GetName() method that was showing in BVolume::GetName()

Big docs cleanup.

* Fixed headers including:
- All rights reserved not All Rights Reserved.
- name, email@domain.com not name <email@domain.com>
- tabs and spaces
- Authors: not Documented by:
* Renamed string.dox to String.dox
* Renamed midixxx.dox files to MidiXxx.dox
* Moved images into images subdirectories and updated Doxfile.
* Re-format all files with tabs instead of spaces.
* Fix many spelling mistakes.
* Added all files, classes, structs, and enums to libbe group.

Merge work by John Scipione on the Haiku Book.
* Some new classes documented
* Screenshots for the interface kit controls
* A lot of typo fixes
* Some css tweaks

This has some backporting to the current version of Doxygen, since
there are experiments to get coloring similar to the one in the Be
Book that will hopefully be upstreamed in Doxygen.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42608 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Lots of fixes and proofreading to the locale api reference


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38010 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Update locale kit documentation.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38004 a95241bf-73f2-0310-859d-f6bbb57e9c96

Update Locale Kit docs.

Add \since to each method. This was pretty easy to figure out since
the whole kit exists only in Haiku.

Fix BCountry::GetName() method that was showing in BVolume::GetName()

Big docs cleanup.

* Fixed headers including:
- All rights reserved not All Rights Reserved.
- name, email@domain.com not name <email@domain.com>
- tabs and spaces
- Authors: not Documented by:
* Renamed string.dox to String.dox
* Renamed midixxx.dox files to MidiXxx.dox
* Moved images into images subdirectories and updated Doxfile.
* Re-format all files with tabs instead of spaces.
* Fix many spelling mistakes.
* Added all files, classes, structs, and enums to libbe group.

Merge work by John Scipione on the Haiku Book.
* Some new classes documented
* Screenshots for the interface kit controls
* A lot of typo fixes
* Some css tweaks

This has some backporting to the current version of Doxygen, since
there are experiments to get coloring similar to the one in the Be
Book that will hopefully be upstreamed in Doxygen.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42608 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Lots of fixes and proofreading to the locale api reference


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38010 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Update locale kit documentation.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38004 a95241bf-73f2-0310-859d-f6bbb57e9c96