D25244: Implement ISpellChecker backend for Windows >= 8

[Christoph Cullmann]

cullmann added reviewers: Frameworks, vonreth.

REPOSITORY
  R246 Sonnet

REVISION DETAIL
  https://phabricator.kde.org/D25244

To: cullmann, #frameworks, vonreth
Cc: kde-frameworks-devel, LeGast00n, GB_2, michaelh, ngraham, bruns