libdbusmenu-gtk-dev 12.10.3+13.10.20130913-0ubuntu2 (i386 binary) in ubuntu saucy

 libdbusmenu passes a menu structure across DBus so that a program can
 create a menu simply without worrying about how it is displayed on the
 other side of the bus.
 .
 This package contains files that are needed to build GTK+ applications.