[tracker] (4 commits) Non-fast-forward update to branch sam/explicit-ontology-paths

[Sam Thursfield <sthursfield src gnome org>]

The branch 'sam/explicit-ontology-paths' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  1f91607... libtracker-data: No need to precreate 'data' directory anym
  655c37d... Add tracker_sparql_connection_new_with_ontology(), disable 

Commits added to the branch:

  d75e7c2... libtracker-data: Remove dead code in tracker-db-backup.[ch]
  6b50d1f... libtracker-data: Remove accessor for removed forceJournal p
  d98ce15... libtracker-data: No need to precreate 'data' directory anym
  bb52b7a... Add tracker_sparql_connection_new_with_ontology(), disable