D17560: fully port away from kdelibs4support

[Harald Sitter]

sitter created this revision.
sitter added a reviewer: aacid.
Herald added a reviewer: KDE Games.
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REVISION SUMMARY
  the only remaining use was klocale:
  
  - languageCodeToName now goes through qlocale. it's worse data than before, with variants not being properly mapped into native names. alas, what isn't worse when relying on posix locales :|
  - readOptions' default setting of a langauge now iters the configured languages in klocalizedstring (which in turn comes from the LANGUAGE env var + some extra fallback sugar) to find a language we know. if none was found we continue to fall back to en.soundtheme

TEST PLAN
  builds + loads correct default language based on what is configured in systemsettings + language list looks somewhat sane

REPOSITORY
  R418 KTuberling

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D17560

AFFECTED FILES
  CMakeLists.txt
  toplevel.cpp
  toplevel.h

To: sitter, aacid, #kde_games
Cc: kde-games-devel
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