[tracker] (29 commits) ...Merge branch 'async-queries-due'

[Martyn James Russell <mr src gnome org>]

Summary of changes:

  5b6197e... tracker-store: Do not use GStaticPrivate for thread-indepen (*)
  8f6c88b... libtracker-data: Enable shared cache mode and require SQLit (*)
  d141cce... libtracker-data: Fix memory leak on journal replay (*)
  d20964b... libtracker-fts: Do not use static variable for prepared sta (*)
  136b1e0... libtracker-db: Shutdown FTS before closing database (*)
  15e504d... tracker-fts: Make fulltext_vtab to be per-thread data. (*)
  3d18eb3... libtracker-db: Fix TrackerDBResultSet type check defines. (*)
  b79cbd0... libtracker-db: Use per-thread interfaces (*)
  ea569b6... tracker-store: Fix crash when client disappears with querie (*)
  2accc38... tracker-store: Execute requests in thread pool (*)
  65b6273... libtracker-db: Use multi-thread mode in SQLite (*)
  5358421... TrackerDBInterface: Add interrupt() method. (*)
  c477041... TrackerDBInterfaceSqlite: Implement interrupt(). (*)
  34e60e9... tracker-db-manager: Add tracker_db_manager_interrupt_thread (*)
  461666d... tracker-data-manager: Add tracker_data_manager_interrupt_th (*)
  7d0c33b... TrackerStore: Fix harmless typo. (*)
  3343226... TrackerStore: Keep a list of running tasks. (*)
  0776c70... TrackerStore: Cancel DB operations on client disconnection. (*)
  c4ef6bb... TrackerStore: Set watchdog timeout to control misbehaving q (*)
  cc8147c... tracker-db-manager: wrap thread/iface hashtable access with (*)
  566acca... TrackerStore: Put client_id in TrackerStoreTask. (*)
  d7b425c... TrackerStore: Check client name before cancelling threads o (*)
  659d415... libtracker-fts: Fix crash on thread cleanup (*)
  199330f... tracker-store: Allow running 2 queries in parallel (*)
  edab357... tracker-db-manager: Add NULL check when destroying thread/i (*)
  82e6745... tracker-db-manager: Remove interfaces from hashtable as soo (*)
  7f55942... libtracker-db: Shutdown FTS in all threads before DB interf (*)
  52634ce... libtracker-db: Add missing include (*)
  2b4fc49... Merge branch 'async-queries-due'

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