[libgd] (13 commits) Non-fast-forward update to branch wip/ernestask/gtk4

[Ernestas Kulik <ernestask src gnome org>]

The branch 'wip/ernestask/gtk4' 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:

  0fe749d... margin-container: update size_allocate signature
  6994eb2... margin-container: remove call to gtk_widget_set_allocation(
  ddc265a... margin-container: remove call to gtk_widget_set_redraw_on_a
  c131a38... margin-container: remove call to gtk_container_class_handle
  518a900... margin-container: use gtk_widget_measure()

Commits added to the branch:

  f17c486... Use new gtk_widget_size_allocate() signature
  09434e2... margin-container: remove call to gtk_widget_set_allocation(
  e6f16f9... margin-container: remove call to gtk_widget_set_redraw_on_a
  86a4ba4... margin-container: remove call to gtk_container_class_handle
  b3f5ab1... margin-container: use gtk_widget_measure()
  19b18ee... Remove calls to gtk_widget_show_all()
  033f5e8... Drop info parameter from drag-data-get
  c3a3d91... Replace GtkTarget{Entry,List} with GdkContentFormats
  50d1259... main-icon-box-icon: use gtk_widget_measure()
  86c5dae... Add test for GdMainBox
  cbd9f0a... main-icon-box-child: remove calls to gtk_set_no_show_all()
  172adb9... main-icon-box: drop fake event stuff
  120b3e3... main-icon-box: use gestures for cursor events