[geary] (25 commits) ...Merge branch 'mjog/search-update' into 'mainline'

[Michael Gratton <mjog src gnome org>]

Summary of changes:

  435a5e9... Geary.NamedFlag: Add serialise method for non-debug persist (*)
  4fe0d92... engine: Convert from SQLite FTS3/4 to FTS5 for full-text-se (*)
  0112c81... Geary.SearchQuery: Allow client apps to build search querie (*)
  e0396c3... Geary.ImapDb.SearchQuery: Require stemmer to be passed in t (*)
  6a614ad... Geary.ImapDb.SearchQuery: Use expression to generate FTS5 q (*)
  6ffbfcf... Geary.ImapDb.SearchQuery: Handle folder and deleted message (*)
  2ab7b2c... Geary.ImapDb.SearchQuery: Handle queries with some/all nega (*)
  20a4fd3... Geary.ImapDb.SearchQuery: Rename to Geary.FtsSearchQuery (*)
  092d117... Geary.SearchQuery: Enable checking queries and terms for eq (*)
  4c911f5... Geary.App.SearchFolder: Only update search if query is diff (*)
  9cb3a0d... Geary.FtsSearchQuery: Fix build with vala ~ <= 0.48 (*)
  9bd2359... Geary.Account: Make new_search_query synchronous (*)
  f560707... Geary.FtsSearchQuery: Fixes for email text disjunctions (*)
  bb02e15... Geary.App.SearchFolder: Substantial implementation rework (*)
  90711f2... Geary.App.FillWindowOperation: detect stale FillWindowOpera (*)
  7e38198... ImapDb.Database: Register new ICU-based tokeniser for FTS (*)
  36ba76b... src/engine/imap-db/imap-db-fts5-*.c: Fix build warnings (*)
  67af1b2... po/POFILES.in: Add missing files (*)
  d74c024... Geary.FtsSearchQuery: Re-introduce FTS search optimisations (*)
  d98467a... Geary.ImapDB.Account: Print SQL for search statements befor (*)
  24140c0... Geary.App.RemoveOperation: Queue a window count check after (*)
  58cae0a... Geary.ImapDB.Account: Drop post-search stemmed term greedy  (*)
  2f81fdf... build: Add minimal ICU VAPI for UBreakIterator (*)
  642bf00... Util.Email.SearchExpressionFactory: Use ICU for work breaki (*)
  9af0a2d... Merge branch 'mjog/search-update' into 'mainline'

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