[gtkmm] Gtk::TreeSortable and Window: Remove some TODO comments

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 8bad5579a4d784acd85a21ef81177d6c13b9d893
Author: Kjell Ahlstedt <kjellahlstedt gmail com>
Date:   Tue Jul 11 18:59:05 2017 +0200

    Gtk::TreeSortable and Window: Remove some TODO comments
    
    * gtk/src/treesortable.hg: TreeSortable shall not derive from TreeModel.
    Every interface shall derive directly from Glib::Interface, whatever
    other interfaces or classes it requires. See bug 776537
    * gtk/src/window.hg: Correct the since tag of set_icon_name().

 gtk/src/treesortable.hg |    2 --
 gtk/src/window.hg       |    3 +--
 2 files changed, 1 insertions(+), 4 deletions(-)
---
diff --git a/gtk/src/treesortable.hg b/gtk/src/treesortable.hg
index b8a478c..d036640 100644
--- a/gtk/src/treesortable.hg
+++ b/gtk/src/treesortable.hg
@@ -39,8 +39,6 @@ typedef struct _GtkTreeSortableIface GtkTreeSortableIface;
 namespace Gtk
 {
 
-//TODO: This should maybe derive from TreeModel, because it is a prerequisite. murrayc
-
 /**
  * @ingroup TreeView
 */
diff --git a/gtk/src/window.hg b/gtk/src/window.hg
index 619afc9..e5669f8 100644
--- a/gtk/src/window.hg
+++ b/gtk/src/window.hg
@@ -226,8 +226,7 @@ dnl
   _WRAP_METHOD(void set_icon(const Glib::RefPtr<Gdk::Pixbuf>& icon),
                gtk_window_set_icon)
 
-  //TODO: Correct the since tag.
-  _WRAP_METHOD(void set_icon_name(const Glib::ustring& name), gtk_window_set_icon_name)
+  _WRAP_METHOD(void set_icon_name(const Glib::ustring& name), gtk_window_set_icon_name, newin "2,18")
   _WRAP_METHOD(bool set_icon_from_file(const std::string& filename), gtk_window_set_icon_from_file, errthrow)
 
   _WRAP_METHOD(Glib::RefPtr<Gdk::Pixbuf> get_icon(), gtk_window_get_icon, refreturn)