[tomboy] Fix Mac and Windows build (bug #596395)

[Sanford Armstrong <sharm src gnome org>]

commit 2aff2399f3802fcdcae3bb182b73a64597a95908
Author: Sandy Armstrong <sanfordarmstrong gmail com>
Date:   Sat Sep 26 12:08:47 2009 -0700

    Fix Mac and Windows build (bug #596395)

 Tomboy/Tray.cs |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/Tomboy/Tray.cs b/Tomboy/Tray.cs
index 174db53..eeeac32 100644
--- a/Tomboy/Tray.cs
+++ b/Tomboy/Tray.cs
@@ -2,7 +2,9 @@ using System;
 using System.Collections.Generic;
 using Mono.Unix;
 using System.Runtime.InteropServices;
+#if !WIN32 && !MAC
 using GtkBeans;
+#endif
 
 namespace Tomboy
 {