D29201: KCMUtils: Add option to append service file to list of arguments

[Alexander Lohnau]

alex added a reviewer: mart.

REPOSITORY
  R295 KCMUtils

REVISION DETAIL
  https://phabricator.kde.org/D29201

To: alex, #plasma, ngraham, meven, broulik, mart
Cc: mart, apol, kde-frameworks-devel, LeGast00n, cblack, michaelh, ngraham, 
bruns