[gtkmm] Created tag 3.17.80

[Murray Cumming <murrayc src gnome org>]

The unsigned tag '3.17.80' was created.

Tagger: Murray Cumming <murrayc murrayc com>
Date: Thu Sep 3 20:29:23 2015 +0200

    3.17.80

Changes since the last tag '3.17.70':

Murray Cumming (17):
      ButtonBox: Remove unnecessary _IMPLEMENTS_INTERFACE().
      SpinButton: Remove unnecessary _IMPLEMENTS_INTERFACE().
      C++11: Object: Add move operations.
      gmmproc: _CLASS_GTKOBJECT(): Add move operations.
      C++11: Mark all _CLASS_OPAQUE_REFCOUNTED classes as final.
      Add simple test for Gtk::Object move operations.
      configure.ac: Require the latest glibmm.
      C++11: TimeCoord: Add move operations.
      Point: Add copy and move operations.
      gmmproc: _CLASS_GTKOBJECT(): Make the destructor explicitly noexcept.
      _CLASS_GTKOBJECT: Make the move operations noexcept.
      Make all destructors explicitly noexcept.     This is possibly foolish because it is already the 
default for     destructors, but this makes it clearer to me.
      treeview demo: Use std::stoi() instead of atod() and c_str().
      C++11: TreeView: Use std::stod() instead of std::strtod().
      demowindow: Use std::cerr instead of g_warning().
      Use the latest pangomm and atkmm.
      3.17.80