Fixes#193
Under curses interface, make characters which are both entry selectors
and menu commands function as a selector. Needed to support using ':'
to look inside a container when applying/looting it via menu, instead
of performing a menu search operation. (There was another case like
this but I can't remember what the circumstances are. The fix is
general enough to cover it, whatever it is.)
For menus which don't have ':' as a choice, make sure search prompt
doesn't offer garbage default input when built with EDIT_GETLIN.
Bug? If player has 'popup_dialog' option On, EDIT_GETLIN is ignored.
Plain curses I/O doesn't seem to offer a way to implement it.
cdb4a9e8b3