[gtk/gtk-3-24] (2 commits) ...Merge branch 'issue1507' into 'gtk-3-24'

From: Emmanuele Bassi <ebassi src gnome org>
To: commits-list gnome org
Cc:
Subject: [gtk/gtk-3-24] (2 commits) ...Merge branch 'issue1507' into 'gtk-3-24'
Date: Mon, 10 Dec 2018 16:39:26 +0000 (UTC)

Summary of changes:

  ffeacd5... a11y: Check X11 display at runtime
  403f4c9... Merge branch 'issue1507' into 'gtk-3-24'