[tracker/writeback] (18 commits) ...Merge branch 'master' into writeback

[Philip Van Hoof <pvanhoof src gnome org>]

Summary of changes:

  64fd424... Support nrl:InverseFunctionalProperty in .ontology files (*)
  187edb0... NCO: Mark nco:phoneNumber as inverse functional property (*)
  e818c66... NCO: Mark nco:imID and nco:emailAddress as inverse function (*)
  165bb6b... SPARQL: Optimize simple optionals with inverse functional p (*)
  dce9da1... libtracker-data: Add UNIQUE index for inverse functional pr (*)
  248dd61... libtracker-data: Add NRL_INVERSE_FUNCTIONAL_PROPERTY consta (*)
  e6f5d0d... libtracker-data: Simplify inverse functional property check (*)
  80e08b9... libtracker-data: Propagate SQLite errors in buffer_flush (*)
  0943aa9... Release 0.7.7 (*)
  2572d5a... Added text in RSS example. Updated to lastest tracker API. (*)
  69e116a... Add command line options to tracker-search-tool (*)
  13316e7... NMO: Readd nmo:VOIPCall for backward compatibility (*)
  12bd295... Add some zeitgeist interaction in the RSS-reader example (*)
  313b9b4... Updated Slovenian translation (*)
  53ff15d... Fixed harmless compilation warnings (*)
  9f94846... Throw normal errors instead of SparqlError now that stmt.ex (*)
  26f0173... Added support for INTO and FROM to SPARQL UPDATE extension (*)
  ef4c7dd... Merge branch 'master' into writeback

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