D19445: Handle variant list in formatting functions

[Alexander Stippich]

astippich added a dependent revision: D20013: Use Qt function for string list 
formatting.

REPOSITORY
  R286 KFileMetaData

REVISION DETAIL
  https://phabricator.kde.org/D19445

To: astippich, ngraham, bruns
Cc: kde-frameworks-devel, #baloo, gennad, domson, ashaposhnikov, michaelh, 
astippich, spoorun, ngraham, bruns, abrahams