D13216: Overhaul the file index scheduler.

[James Smith]

smithjd added a reviewer: mgallien.

REPOSITORY
  R293 Baloo

REVISION DETAIL
  https://phabricator.kde.org/D13216

To: smithjd, bruns, mgallien
Cc: kde-frameworks-devel, #baloo, ashaposhnikov, michaelh, astippich, spoorun, 
ngraham, bruns