Don't try to index SQL database dumps
These contain no useful indexable data and can be huge, contributing to Baloo seeming
to take forever to index and locking I/O. So don't try to index them.
src/file/fileexcludefilters.cpp is not increased by one because it was already bumped
in a prior commit this morning during this Frameworks cycle.
Reviewers: Frameworks, bruns, mgallien
Reviewed By: mgallien
Subscribers: kde-frameworks-devel, Baloo
Differential Revision: https://phabricator.kde.org/D21219