[glom] Make a method protected.

[Murray Cumming <murrayc src gnome org>]

commit b21a51685cf21bc7810ef11746a0668a575760f5
Author: Murray Cumming <murrayc murrayc com>
Date:   Mon Mar 7 15:32:36 2011 +0100

    Make a method protected.

 glom/utility_widgets/notebookglom.h |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/glom/utility_widgets/notebookglom.h b/glom/utility_widgets/notebookglom.h
index 9130919..7391444 100644
--- a/glom/utility_widgets/notebookglom.h
+++ b/glom/utility_widgets/notebookglom.h
@@ -30,6 +30,7 @@ namespace Glom
 {
 
 class Application;
+class NotebookLabel;
 
 class NotebookGlom
 : public Gtk::Notebook,
@@ -40,6 +41,8 @@ public:
   explicit NotebookGlom();
   virtual ~NotebookGlom();
 
+protected:
+  friend class NotebookLabel;
   void delete_from_layout();  
   
 protected: