* calendar/calendar.el (calendar-cursor-to-date): Add argument `event'.

* calendar/calendar.el (calendar-cursor-to-date): Add argument `event'.
(calendar-set-mark):
* calendar/diary-lib.el (diary-insert-entry):
* calendar/solar.el (calendar-sunrise-sunset): Use it.
* calendar/cal-menu.el (calendar-mouse-sunrise/sunset)
(calendar-mouse-insert-diary-entry, calendar-mouse-set-mark): Delete.
(cal-menu-context-mouse-menu): Use calendar-set-mark, diary-insert-entry,
and calendar-sunrise-sunset instead, to get proper key-shortcuts.