[tracker] (20 commits) Created branch wal

[Jürg Billeter <juergbi src gnome org>]

The branch 'wal' was created.

Summary of new commits:

  d5a96fb... libtracker-db: Enable Write-Ahead Logging in SQLite
  100eb45... libtracker-data: Do not use overly large transactions anymo
  36a2a62... tracker-store: Drop special batch handling
  e777711... tracker-store: Allow running queries while update is runnin
  37c4fb7... libtracker-db: Disable shared cache, required for parallel 
  97274ad... tracker-store: Store sender for turtle import tasks as well
  f4f2a5c... tracker-store: Never try to process more than 1 million eve
  32e2411... tracker-store: Turtle import improvements
  cb7893d... libtracker-data: Add tracker_data_load_turtle_file
  a356419... tracker-store: Use tracker_data_load_turtle_file
  b7be3e5... libtracker-data: Also delete -shm and -wal files when delet
  8685c1e... libtracker-data: Transaction handling fixes
  8fd4ec9... libtracker-data: Allow multiple statement instances for the
  d5ff384... libtracker-data: Use single DB file
  5c4a840... libtracker-data: Remove tracker-sparql-query.h from public 
  2a3004d... Update .gitignore
  52f7a6b... tracker-store: Allow disabling CPU affinity with env var
  478ea83... libtracker-data: Don't leak in_use_filename in db-manager
  cffc5b7... libtracker-data: remove all null checks before g_free() in 
  ea0a597... Rebase fixes