D29101: KNewStuff: Fix file path and process call

[Nathaniel Graham]

ngraham added a reviewer: leinir.

REPOSITORY
  R304 KNewStuff

REVISION DETAIL
  https://phabricator.kde.org/D29101

To: alex, #knewstuff, ngraham, nicolasfella, elvisangelaccio, meven, mlaurent, 
leinir
Cc: kde-frameworks-devel, LeGast00n, cblack, michaelh, ngraham, bruns