/usr/include/jana/libjana-gtk/ is in libjana-gtk-dev 0.0.0+git20091215.9ec1da8a-2build4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/jana/libjana-gtk/jana-gtk-cell-renderer-event.h
/usr/include/jana/libjana-gtk/jana-gtk-cell-renderer-note.h
/usr/include/jana/libjana-gtk/jana-gtk-clock.h
/usr/include/jana/libjana-gtk/jana-gtk-date-time.h
/usr/include/jana/libjana-gtk/jana-gtk-day-view.h
/usr/include/jana/libjana-gtk/jana-gtk-event-list.h
/usr/include/jana/libjana-gtk/jana-gtk-event-store.h
/usr/include/jana/libjana-gtk/jana-gtk-month-view.h
/usr/include/jana/libjana-gtk/jana-gtk-note-store.h
/usr/include/jana/libjana-gtk/jana-gtk-recurrence.h
/usr/include/jana/libjana-gtk/jana-gtk-tree-layout.h
/usr/include/jana/libjana-gtk/jana-gtk-utils.h
/usr/include/jana/libjana-gtk/jana-gtk-world-map-marker-pixbuf.h
/usr/include/jana/libjana-gtk/jana-gtk-world-map-marker.h
/usr/include/jana/libjana-gtk/jana-gtk-world-map.h
/usr/include/jana/libjana-gtk/jana-gtk-year-view.h
/usr/include/jana/libjana-gtk/jana-gtk.h