Log Message:
gtk3: updated to 3.24.24

Overview of Changes in GTK+ 3.24.24
===================================

* GtkColorChooser:
 - Update the default color palette

* GtkFontChooser:
 - Fix family-only mode to return regular style

* GtkTreeView:
 - Don't set focus-on-click for header buttons

* Accessibility:
 - Implement scrollSubstringTo
 - Add a11y support to GtkPlug/GtkSocket

* Printing:
 - Allow the lpr backend to print pdf and ps files

* Theme:
 - Update gesture graphics
 - Update HighContrast css

* Wayland:
 - Support the primary-selection-unstable-v1 protocol

* X11:
 - Fix a crash with parent-relative backgrounds

* Broadway:
 - Set modifier state of scroll events

* Build:
 - Fix pc file generation on NixOS

* OS X:
 - Restore command-key bindings

* Windows:
 - Fix meson build with epoxy subproject

* Translation updates:
 Basque
 Brazilian Portuguese
 British English
 Catalan
 Croatian
 Czech
 French
 Galician
 German
 Greek
 Hebrew
 Hungarian
 Indonesian
 Italian
 Kazakh
 Latvian
 Lithuanian
 Persian
 Polish
 Portuguese
 Slovak
 Slovenian
 Spanish
 Swedish
 Turkish
 Ukrainian