[tracker] (19 commits) ...build: Fixed various compiler warnings across the entire code base

[Martyn James Russell <mr src gnome org>]

Summary of changes:

  4270624... tracker-extract: Rework albumart API to allow multiple medi (*)
  e6dac0b... tracker-extract: Extract tracker_albumart_find_external() (*)
  612af06... tracker-extract: Minor albumart code cleanups (*)
  dbfb327... tracker-extract: Rewrite tracker_albumart_find_external() (*)
  826d347... Rename albumart functions to media-art (*)
  8cd6813... libtracker-extract,tracker-extract: Return guaranteed title (*)
  5437192... tracker-extract-gstreamer: Fix compile warnings (*)
  9ba84a6... tracker-extract: Fix whitespace errors (*)
  439c662... libtracker-common: Fix media art paths when artist is not k (*)
  bcd9954... libtracker-common: Refactor tracker_media_art_get_path() (*)
  3109c50... tracker-extract-gstreamer: Move media art parameters to Met (*)
  4788c27... tracker-extract-gstreamer: Remove explicit zeroing after g_ (*)
  70bbb32... libtracker-miner: Rename media art update functions (*)
  37b9945... tracker-extract: Rename tracker_extract_find_external() (*)
  301ebb7... tracker-extract: Style fixes and optimisations in tracker-m (*)
  768ac52... tracker-extract: Use enum to represent media-art image prio (*)
  c087246... Merge branch 'media-art-enhancements'
  4ba59dc... libtracker-common: Fixed unit tests with renamed albumart
  61be57c... build: Fixed various compiler warnings across the entire co

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