[gtkmm] Update for enum now in class: Glib::Binding::Flags.

[Murray Cumming <murrayc src gnome org>]

commit 83dfd6fa5cb5425c1166946a480b16b43a03b645
Author: Murray Cumming <murrayc murrayc com>
Date:   Tue Apr 18 22:01:58 2017 +0200

    Update for enum now in class: Glib::Binding::Flags.

 demos/gtk-demo/example_iconbrowser.cc |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/demos/gtk-demo/example_iconbrowser.cc b/demos/gtk-demo/example_iconbrowser.cc
index 9b507d9..12a1f8d 100644
--- a/demos/gtk-demo/example_iconbrowser.cc
+++ b/demos/gtk-demo/example_iconbrowser.cc
@@ -221,7 +221,7 @@ Example_IconBrowser::Example_IconBrowser()
   m_binding_search_button_search_entry = Glib::Binding::bind_property(
     m_search_button.property_active(),
     m_search_bar.property_search_mode_enabled(),
-    Glib::BindingFlags::BIDIRECTIONAL);
+    Glib::Binding::Flags::BIDIRECTIONAL);
   m_vcontent_box.pack_start(m_scrolled_window);
   m_scrolled_window.set_policy(Gtk::PolicyType::NEVER, Gtk::PolicyType::AUTOMATIC);
   m_scrolled_window.add(m_icon_view);