[gtk+/gtk-3-22] Update API for El Capitan+

[Matthias Clasen <matthiasc src gnome org>]

commit 68b92cc6ef6f4276f4529ce49be2febdb78db06b
Author: Cody Russell <bratsche gnome org>
Date:   Tue Jul 18 14:54:11 2017 -0400

    Update API for El Capitan+
    
    Use NSAnimationContext where possible.

 gdk/quartz/gdkwindow-quartz.c |   18 ++++++++++++++++--
 1 files changed, 16 insertions(+), 2 deletions(-)
---
diff --git a/gdk/quartz/gdkwindow-quartz.c b/gdk/quartz/gdkwindow-quartz.c
index 6878e52..4ffbae0 100644
--- a/gdk/quartz/gdkwindow-quartz.c
+++ b/gdk/quartz/gdkwindow-quartz.c
@@ -423,7 +423,14 @@ _gdk_quartz_display_before_process_all_updates (GdkDisplay *display)
 {
   in_process_all_updates = TRUE;
 
-  NSDisableScreenUpdates ();
+  if (gdk_quartz_osx_version () >= GDK_OSX_EL_CAPITAN)
+    {
+      [NSAnimationContext endGrouping];
+    }
+  else
+    {
+      NSDisableScreenUpdates ();
+    }
 }
 
 void
@@ -453,7 +460,14 @@ _gdk_quartz_display_after_process_all_updates (GdkDisplay *display)
 
   in_process_all_updates = FALSE;
 
-  NSEnableScreenUpdates ();
+  if (gdk_quartz_osx_version() >= GDK_OSX_EL_CAPITAN)
+    {
+      [NSAnimationContext beginGrouping];
+    }
+  else
+    {
+      NSEnableScreenUpdates ();
+    }
 }
 
 static const gchar *