[gtk+/gtk-3-8] gdkwindow: Add alpha_bg to window debug print

[Alexander Larsson <alexl src gnome org>]

commit 6ca15267c98343d552bd0c32317693f3e82d6212
Author: Alexander Larsson <alexl redhat com>
Date:   Wed Mar 27 11:42:44 2013 +0100

    gdkwindow: Add alpha_bg to window debug print

 gdk/gdkwindow.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index 6d48080..7686200 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -9999,6 +9999,9 @@ gdk_window_print (GdkWindow *window,
     g_print (" alpha[%d]",
           window->alpha);
 
+  if (window->has_alpha_background)
+    g_print (" alpha_bg");
+
   s = print_region (window->clip_region);
   g_print (" clipbox[%s]", s);