[gtk+] Make gdk build against old X headers

[Matthias Clasen <matthiasc src gnome org>]

commit 25864cf0ceddfbaf7703ecff4964f1ef708f66c7
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Jun 6 19:39:12 2010 -0400

    Make gdk build against old X headers
    
    The XI.h in RHEL5 is missing some defines that are used
    in the new device code.

 gdk/x11/gdkdevicemanager-xi.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/gdk/x11/gdkdevicemanager-xi.c b/gdk/x11/gdkdevicemanager-xi.c
index c1c3390..e11cb58 100644
--- a/gdk/x11/gdkdevicemanager-xi.c
+++ b/gdk/x11/gdkdevicemanager-xi.c
@@ -202,6 +202,12 @@ translate_class_info (GdkDevice   *device,
     }
 }
 
+/* old versions of XI.h don't define these */
+#ifndef IsXExtensionKeyboard
+#define IsXExtensionKeyboard 3
+#define IsXExtensionPointer  4
+#endif
+
 static GdkDevice *
 create_device (GdkDeviceManager *device_manager,
                GdkDisplay       *display,