[tomboy] Fix #667026 by adding '?' to the screening list

[Jared L Jennings <jjennings src gnome org>]

commit d816cbd01ef54ecd259518bc1f373c374f9427a0
Author: Robert Nordan <rpvn robpvn net>
Date:   Thu Feb 23 16:22:34 2012 +0100

    Fix #667026 by adding '?' to the screening list
    
    Signed-off-by: Jared Jennings <jjennings src gnome org>

 Tomboy/ExportAllApplicationAddin.cs |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/Tomboy/ExportAllApplicationAddin.cs b/Tomboy/ExportAllApplicationAddin.cs
index 00623b9..f269482 100644
--- a/Tomboy/ExportAllApplicationAddin.cs
+++ b/Tomboy/ExportAllApplicationAddin.cs
@@ -350,6 +350,7 @@ namespace Tomboy
 			note_title = note_title.Replace ('/', '_');
 			note_title = note_title.Replace ('\\', '_');
 			note_title = note_title.Replace ('.', '_');
+			note_title = note_title.Replace ('?', '_');
 
 			return note_title;
 		}