[tracker] (6 commits) ...Merge branch 'sam/domain-rules-outside-usr'

[Sam Thursfield <sthursfield src gnome org>]

Summary of changes:

  eb24ea9... Add tracker_sparql_connection_get/set_dbus_connection() (*)
  9840ab0... tracker_domain_ontology_get_domain() should return only the (*)
  dd59bb4... Allow use of domain rules that aren't installed into /usr (*)
  bb72634... libtracker-sparql: Don't use 'namespace' as a parameter nam
  034e7a2... Merge branch 'sam/tracker-sparql-connection-set-dbus-connec
  675b727... Merge branch 'sam/domain-rules-outside-usr'

(*) This commit already existed in another branch; no separate mail sent