[gtk] (30 commits) Non-fast-forward update to branch dnd-gestures-2

[Matthias Clasen <matthiasc src gnome org>]

The branch 'dnd-gestures-2' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  c6fd83a... Make GtkDragIcon public
  6426402... dragsource: Use public drag icon api
  7a0a024... label: Use gdk_drag_begin
  7678e5d... calendar: Use gdk_drag_begin

Commits added to the branch:

  df26b4a... Make GtkDragIcon public
  8b701db... dragsource: Use public drag icon api
  9627de7... label: Use gdk_drag_begin
  dd6dcd5... calendar: Use gdk_drag_begin
  b41b637... text: Use gdk_drag_begin
  cce4128... entry: Use gdk_drag_begin
  319c939... textview: Use gdk_drag_begin
  1fd90d8... placessidebar: Use gdk_drag_begin
  552e14b... notebook: Use gdk_drag_begin
  0be649d... Make GtkDragSource a gesture
  7bdf3e2... iconview: Use gdk_drag_begin
  0b3e946... treeview: Use gdk_drag_begin
  5bc3c28... filechooserwidget: wip
  834b82f... USe gtk_widget_add_controller instead of gtk_drag_source_at
  ed6614d... notebook: Stop using gtk_drag_source_get_origin
  693eb88... filechooserwidget: Stop using gtk_drag_source_get_origin
  4d8b08c... dragsource: Drop gtk_drag_source_get_origin
  3753024... notebook: Stop using gtk_drag_get_source
  03d5eda... dragsource: Drop gtk_drag_get_source
  a54485b... dragsource: Make ::prepare return a boolean
  46813b4... dragsource: Document prepare
  8a906d5... dragsource: Tweak docs more
  284425e... dragsource: Rename ::drag-failed to ::drag-cancel
  4f71878... testdnd2: Update to the api change in the previous commit
  626f1c1... Remove an unused enum
  04fd713... placessidebar: Update a comment
  c66b79e... dragsource: tiny docs improvement
  57a16a4... filechooser: Stop using gtk_drag_source_get_drag
  1d3f423... dragsource: Fix cancellation
  fc50b9e... dragsource: Flesh out the docs