[gtk] (24 commits) ...Merge branch 'wip/otte/bitset' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  d830724... Add amalgamated roaring bitmaps source code (*)
  db452f0... Add GtkBitset (*)
  ff36cfb... testsuite: Add tests for GtkBitset (*)
  277a91d... multiselection: Port to GtkBitset (*)
  8395698... selectionmodel: Replace query_range() with get_selection() (*)
  fa02956... selectionmodel: Add gtk_selection_model_set_selection() (*)
  a38c423... listbase: Port rubberband to gtk_selection_model_set_select (*)
  006dfdc... selectionmodel: Remove select_callback() functions (*)
  58d3213... Remove GtkSet (*)
  3d8b6f6... multiselection: Track items across resorts (*)
  6ceab55... gtk-demo: Port listview-colors demo to multiselection again (*)
  488b0cb... gtk: Remove GtkPropertySelection (*)
  e574dcb... Fix indentation (*)
  de4803b... listbase: Don't do extra work (*)
  c2b0330... listbase: Move a common function from the children into Gtk (*)
  64aa281... listbase: Allocate rubberband according to list coords (*)
  147388e... multiselection: Implement get_selection_in_range() (*)
  724c936... listbase: Allocate gridview items properly on RTL (*)
  7c52e03... listbase: Flip autoscroll deltas if adjustments are flipped (*)
  ec4a489... listview: Allocate rubberband at end of size_allocate() (*)
  a594996... listbase: Compute rubberband region on-demand (*)
  30488e6... listbase: Only compute the modifiers when releasing the rub (*)
  dc1dbe6... listbase: Make rubberbanding a threshold drag (*)
  e04191a... Merge branch 'wip/otte/bitset' into 'master'

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