[vala/0.46] gtk+-3.0: Update to 3.24.18

[Rico Tzschichholz <ricotz src gnome org>]

commit 556f688d110c48f330893bb92f16658d395515e8
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Mon Apr 20 22:08:05 2020 +0200

    gtk+-3.0: Update to 3.24.18

 vapi/gtk+-3.0.vapi | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
---
diff --git a/vapi/gtk+-3.0.vapi b/vapi/gtk+-3.0.vapi
index 2351b9679..295c54d6c 100644
--- a/vapi/gtk+-3.0.vapi
+++ b/vapi/gtk+-3.0.vapi
@@ -10240,6 +10240,7 @@ namespace Gtk {
                public virtual signal bool enable_debugging (bool toggle);
                public virtual signal void keys_changed ();
                [HasEmitter]
+               [Version (since = "2.24")]
                public virtual signal void set_focus (Gtk.Widget? focus);
        }
        [CCode (cheader_filename = "gtk/gtk.h,gtk/gtk-a11y.h", type_id = "gtk_window_accessible_get_type ()")]
@@ -11539,7 +11540,10 @@ namespace Gtk {
                LGPL_2_1_ONLY,
                LGPL_3_0_ONLY,
                AGPL_3_0,
-               AGPL_3_0_ONLY
+               AGPL_3_0_ONLY,
+               BSD_3,
+               APACHE_2_0,
+               MPL_2_0
        }
        [CCode (cheader_filename = "gtk/gtk.h", cprefix = "GTK_MENU_DIR_", type_id = 
"gtk_menu_direction_type_get_type ()")]
        public enum MenuDirectionType {