Log Message:
gtk3+: update to 3.24.11.

Overview of Changes in GTK+ 3.24.11
===================================

* Adwaita:
 - Add drop shadow to icons
 - Small color fixes
 - Make title buttons round

* OS X: Fix the monitors-changed signal

* Win32:
 - Build fixes
 - Support choices in the native file chooser
 - Fix icon cache freshness checks on 64bit

* Wayland:
 - Support xdg-output v3
 - Fix clipboard ownership handling

* X11: Improve monitor metadata

* Build: Require GLib 2.57.2

* Translation updates:
 Basque
 Brazilian Portuguese
 British English
 Catalan
 Croatian
 French
 Friulian
 Galician
 German
 Greek
 Hungarian
 Indonesian
 Japanese
 Korean
 Latvian
 Lithuanian
 Polish
 Punjabi
 Romanian
 Serbian
 Slovenian
 Spanish
 Swedish