[tracker] (32 commits) ...Merge branch 'wip/extract-graphs'

[Martyn James Russell <mr src gnome org>]

Summary of changes:

  0c0073b... libtracker-sparql: Allow append() on embedded inserts in Tr (*)
  f535dcd... libtracker-extract: Move TrackerExtractInfo out to its own  (*)
  381fbaa... tracker-extract: Pass a TrackerExtractInfo to the exported  (*)
  d5c45c8... tracker-extract: Add a "graph" parameter to dbus methods (*)
  3d7caee... tracker-extract: Pass the graph down to extract modules (*)
  db9da3a... tracker-extract: use provided graph when inserting keywords (*)
  6adc7ea... tracker-extract: use provided graph when inserting keywords (*)
  46c7da9... tracker-extract: use provided graph when inserting keywords (*)
  03c74c0... tracker-extract: use provided graph when inserting keywords (*)
  ae9be75... tracker-extract: use provided graph when inserting keywords (*)
  275bdd8... Revert "ontology: Remove tracker:writeback property from na (*)
  25423cc... libtracker-extract: Fixed some small coding style issues (*)
  d6913b3... tracker-extract: Fix potential memory leak with XMP where s (*)
  c63c857... tracker-extract: Fixed reference to non-existent variable (*)
  ddb63c9... tracker-extract, mp3: Do all inserts in miner-fs's graph (*)
  a59c1d5... examples/libtracker-extract: Fix mockup example's API usage (*)
  3cd5582... tracker-extract, mp3: Don't use the graph in the deletes (*)
  097932b... tracker-extract, flac: Do all inserts in miner-fs's graph (*)
  20cf1b1... libtracker-extract: Fixed missing "Since" in documentation (*)
  f8f1e48... tracker-extract, gif: Do all inserts in miner-fs's graph (*)
  9734998... tracker-extract, gstreamer: Do all inserts in miner-fs's gr (*)
  9104a64... tracker-extract, jpeg: Do all inserts in miner-fs's graph (*)
  6643b4f... tracker-extract, libxine: Do all inserts in miner-fs's grap (*)
  af29d59... tracker-extract, mplayer: Do all inserts in miner-fs's grap (*)
  e988bd7... tracker-extract, pdf: Do all inserts in miner-fs's graph (*)
  b85a1a5... tracker-extract, png: Do all inserts in miner-fs's graph (*)
  18d9f53... tracker-extract, tiff: Do all inserts in miner-fs's graph (*)
  4b074ad... tracker-extract, totem: Do all inserts in miner-fs's graph (*)
  d75e229... tracker-extract, vorbis: Do all inserts in miner-fs's graph (*)
  b7de36a... tracker-extract, libtracker-extract, xmp: Do all inserts in (*)
  625f6fe... libtracker-extract: Fixed unit tests which now require a gr (*)
  81c9cfd... Merge branch 'wip/extract-graphs'

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