[tracker] (24 commits) ...Merge branch 'wip/carlosg/direct-rewrite'

[Carlos Garnacho <carlosg src gnome org>]

Summary of changes:

  a5332e9... libtracker-direct: Rewrite in C (*)
  da5283d... libtracker-direct: Add internal TrackerDataManager getter (*)
  0a4c921... tracker-store: Do not freeze events during TTL load (*)
  ed8e987... libtracker-data: Remove TRACKER_DB_MANAGER_REMOVE_CACHE fla (*)
  cb3ef04... libtracker-direct: Add internal function to set additional  (*)
  05383d9... libtracker-direct: Add sync() call (*)
  7b25b9a... libtracker-data: Drop CommitType (*)
  dffa19e... libtracker-data: Move TrackerClass event maintenance to tra (*)
  0d80835... tracker-store: Do immediate GraphUpdated emission checks on (*)
  683035a... tracker-store: Protect event batches with a mutex (*)
  10915fd... tracker-store: Give ownership of writeback events on get_re (*)
  38e362d... tracker-store: Refactor writeback signal emission into sepa (*)
  adfa177... tracker-store: Protect ready writeback events with mutex (*)
  1d59f03... tracker-store: Push TrackerData hooks down to Tracker.Store (*)
  09fae20... libtracker-data: Move notify_transaction() down to libtrack (*)
  693f89d... tracker-store: Use TrackerDirectConnection underneath (*)
  dbce390... libtracker-direct: Remove unused variables (*)
  add37bb... Update meson build system for libtracker-direct changes (*)
  85e58a5... libtracker-data: Fetch shared connection on failure to crea (*)
  d5c79e8... libtracker-direct: Avoid WAL checkpoint on readonly connect (*)
  9329e25... libtracker-direct: Use specific include (*)
  58cc625... libtracker-miner: Coalesce 2 CREATED events (*)
  e4e7766... tests: Adapt TrackerFileNotifier tests to internal behavior (*)
  da97135... Merge branch 'wip/carlosg/direct-rewrite'

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