[gnome-panel] [panel] Add missing include to fix build

[Vincent Untz <vuntz src gnome org>]

commit 013c47d5307b2393d0f8450077163d71c5d26dc2
Author: Vincent Untz <vuntz gnome org>
Date:   Wed Aug 12 00:37:46 2009 +0200

    [panel] Add missing include to fix build

 gnome-panel/panel-multiscreen.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/gnome-panel/panel-multiscreen.c b/gnome-panel/panel-multiscreen.c
index 5e67009..520a078 100644
--- a/gnome-panel/panel-multiscreen.c
+++ b/gnome-panel/panel-multiscreen.c
@@ -25,6 +25,10 @@
 
 #include <config.h>
 
+#include <X11/Xlib.h>
+#include <X11/extensions/Xrandr.h>
+#include <gdk/gdkx.h>
+
 #include "panel-multiscreen.h"
 
 #include <string.h>