[tomboy] Fix mac build

[Sanford Armstrong <sharm src gnome org>]

commit bf5afedd49f62f6bc7f881893e071633677716c7
Author: Sandy Armstrong <sanfordarmstrong gmail com>
Date:   Mon Nov 16 16:36:31 2009 -0800

    Fix mac build

 Tomboy/MacApplication.cs |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/Tomboy/MacApplication.cs b/Tomboy/MacApplication.cs
index e23e3a9..7fcd9ad 100644
--- a/Tomboy/MacApplication.cs
+++ b/Tomboy/MacApplication.cs
@@ -26,6 +26,7 @@
 using System;
 using System.IO;
 using System.Runtime.InteropServices;
+using System.Text.RegularExpressions;
 using Mono.Unix;
 
 using Gtk;