D19268: Let tests use the baloo_filemetadata_temp_extractor from the build dir

[Stefan Brüns]

bruns added a subscriber: Windows.

REPOSITORY
  R824 Baloo Widgets

REVISION DETAIL
  https://phabricator.kde.org/D19268

To: bruns, #frameworks, #baloo, ngraham, astippich, poboiko
Cc: #windows, domson, ashaposhnikov, astippich, spoorun, abrahams