[tracker] (28 commits) ...Merge branch 'fts4'

[Martyn James Russell <mr src gnome org>]

Summary of changes:

  16881d4... libtracker-fts: Update to FTS4 (*)
  17901bd... libtracker-fts: Implement tokenizer FTS module using Tracke (*)
  d2e9bdf... libtracker-data: Add tracker_db_interface_sqlite_fts_delete (*)
  47025f6... libtracker-data: Create several columns for FTS data (*)
  0f79ca9... libtracker-fts: Add the tracker_rank() sqlite function (*)
  86f0e42... libtracker-fts: Add tracker_offsets() sqlite function (*)
  837d28f... libtracker-fts: Add a way to modify FTS table columns (*)
  5a85cf4... libtracker-data: Cope with ontology changes in the FTS tabl (*)
  aa01ef3... libtracker-data: remove useless FTS functions (*)
  ad07090... libtracker-data: Gather FTS changes to perform a single ins (*)
  16fa9ed... fts: Respect max-words configuration setting (*)
  3a3f780... libtracker-data: Perform FTS matching in subquery (*)
  1f435c8... libtracker-data: Implement fts:snippet() (*)
  fa2c4fe... libtracker-fts: Fix reentrancy issues in the TrackerTokeniz (*)
  8667585... libtracker-data: Fix fts detection when constructing SQL (*)
  5f30d16... libtracker-data: Fix FTS initialization (*)
  ee253d9... Update FTS code (*)
  e9c40a7... Detect at configure time whether FTS needs compiling (*)
  6460779... Use fts4 external content tables on Tracker FTS (*)
  1943dfb... Handle FTS queries more generically (*)
  faca29c... tracker-needle: display snippet where available (*)
  00aebbf... libtracker-data: Use a g_message() for cases where FTS is d (*)
  2dbaa01... libtracker-data: Use g_hash_table_unref() not _destroy() (*)
  fb13c66... tracker-sparql: Support fts:offsets(?urn) with shorthand pr (*)
  0273fae... tracker-info: Fixed memory leak when using prefixes for sho (*)
  107cfb8... tracker-info: Fixed memory leak where urn wasn't freed. (*)
  6786e81... Bump database version (*)
  1e97a44... Merge branch 'fts4'

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