/usr/share/guile-gnome-2/gnome/gw/ is in guile-gnome2-dev 2.16.1-6ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/guile-gnome-2/gnome/gw/atk-spec.scm
/usr/share/guile-gnome-2/gnome/gw/cairo-spec.scm
/usr/share/guile-gnome-2/gnome/gw/canvas-spec.scm
/usr/share/guile-gnome-2/gnome/gw/corba-spec.scm
/usr/share/guile-gnome-2/gnome/gw/gconf-spec.scm
/usr/share/guile-gnome-2/gnome/gw/gdk-spec.scm
/usr/share/guile-gnome-2/gnome/gw/glib-spec.scm
/usr/share/guile-gnome-2/gnome/gw/gnome-vfs-spec.scm
/usr/share/guile-gnome-2/gnome/gw/gobject-spec.scm
/usr/share/guile-gnome-2/gnome/gw/gtk-spec.scm
/usr/share/guile-gnome-2/gnome/gw/libglade-spec.scm
/usr/share/guile-gnome-2/gnome/gw/libgnome-spec.scm
/usr/share/guile-gnome-2/gnome/gw/libgnomeui-spec.scm
/usr/share/guile-gnome-2/gnome/gw/pango-spec.scm
/usr/share/guile-gnome-2/gnome/gw/pangocairo-spec.scm
/usr/share/guile-gnome-2/gnome/gw/support/
/usr/share/guile-gnome-2/gnome/gw/support/defs.scm
/usr/share/guile-gnome-2/gnome/gw/support/gobject.scm