[glibmm] Gio: Menu: Add insert/append/prepend_section() with no label parameter.

[Murray Cumming <murrayc src gnome org>]

commit 295bb0c0b54e4a16eda0e2033909fde70f46765f
Author: Murray Cumming <murrayc murrayc com>
Date:   Tue Sep 3 23:40:07 2013 +0200

    Gio: Menu: Add insert/append/prepend_section() with no label parameter.
    
    * gio/src/menu.hg: Because the label may be NULL in C,
      meaning that the sections will just be separated by spaces
      instead of having titles in the menu.
      Bug #702456 .

 gio/src/menu.hg |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gio/src/menu.hg b/gio/src/menu.hg
index dd88b0f..fee1ddd 100644
--- a/gio/src/menu.hg
+++ b/gio/src/menu.hg
@@ -59,9 +59,9 @@ public:
   _WRAP_METHOD(void prepend(const Glib::ustring& label, const Glib::ustring& detailed_action = 
Glib::ustring()), g_menu_prepend)
   _WRAP_METHOD(void append(const Glib::ustring& label, const Glib::ustring& detailed_action = 
Glib::ustring()), g_menu_append)
 
-  _WRAP_METHOD(void insert_section(int position, const Glib::ustring& label, const Glib::RefPtr<MenuModel>& 
section), g_menu_insert_section)
-  _WRAP_METHOD(void prepend_section(const Glib::ustring& label, const Glib::RefPtr<MenuModel>& section), 
g_menu_prepend_section)
-  _WRAP_METHOD(void append_section(const Glib::ustring& label, const Glib::RefPtr<MenuModel>& section), 
g_menu_append_section)
+  _WRAP_METHOD(void insert_section(int position, const Glib::ustring& label{?}, const 
Glib::RefPtr<MenuModel>& section), g_menu_insert_section)
+  _WRAP_METHOD(void prepend_section(const Glib::ustring& label{?}, const Glib::RefPtr<MenuModel>& section), 
g_menu_prepend_section)
+  _WRAP_METHOD(void append_section(const Glib::ustring& label{?}, const Glib::RefPtr<MenuModel>& section), 
g_menu_append_section)
 
   _WRAP_METHOD(void insert_submenu(int position, const Glib::ustring& label, const Glib::RefPtr<MenuModel>& 
submenu), g_menu_insert_submenu)
   _WRAP_METHOD(void prepend_submenu(const Glib::ustring& label, const Glib::RefPtr<MenuModel>& submenu), 
g_menu_prepend_submenu)