[gtk] (8 commits) Non-fast-forward update to branch dnd-gestures

[Matthias Clasen <matthiasc src gnome org>]

The branch 'dnd-gestures' 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:

  72a818a... iconview: Port to GtkDragSource
  a076454... placessidebar: Port to GtkDragSource
  bb7cf3b... treeview: Port to GtkDragSource
  7dd8cb6... filechooser: Port to GtkDragSource
  51ccbf0... notebook: Port to GtkDragSource
  f27abd1... tests: Convert to GtkDragSource
  e783d80... Remove traditional drag source API
  f22214e... docs: Mention DND in the migration guide

Commits added to the branch:

  ae1e32e... iconview: Port to GtkDragSource
  b0e10da... placessidebar: Port to GtkDragSource
  35cf6c2... treeview: Port to GtkDragSource
  4e5a328... filechooser: Port to GtkDragSource
  71b3975... notebook: Port to GtkDragSource
  36c27cb... tests: Convert to GtkDragSource
  7e98f22... Remove traditional drag source API
  5c8381c... docs: Mention DND in the migration guide