Update to 2.2.0
    
    - New upstream release 2.2.0
      - New "select block" feature
      - Block stack is displayed on the statusbar
      - Completely rewritten search and replace engine
      - Quickbar feature has been removed
      - Large changes internally for GTK3 compatibility
    - Drop patches, now included upstream
    - Add patch to fix build with gtk 2.22 (Gnome bug 664556)