[gtkmm] IconInfo: Add is_symbolic() method

[Juan R. Garcia Blanco <juanrgar src gnome org>]

commit fa23cbefa88eb7b69761315cd14c2295e125a17b
Author: Juan R. García Blanco <juanrgar gmail com>
Date:   Sun Feb 23 23:59:06 2014 +0100

    IconInfo: Add is_symbolic() method
    
        * Add wrapper for gtk_icon_info_is_symbolic() method,
        introduced in 3.12.

 gtk/src/iconinfo.hg |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtk/src/iconinfo.hg b/gtk/src/iconinfo.hg
index 1177708..3d5de79 100644
--- a/gtk/src/iconinfo.hg
+++ b/gtk/src/iconinfo.hg
@@ -153,6 +153,8 @@ public:
   std::vector<Gdk::Point> get_attach_points() const;
 
   _WRAP_METHOD(Glib::ustring get_display_name() const, gtk_icon_info_get_display_name)
+
+  _WRAP_METHOD(bool is_symbolic() const, gtk_icon_info_is_symbolic)
 };
 
 } // namespace Gtk