* src/ntl-uri-map.c: Async notification of navinfo - now we just need an async get_file_info call.
* src/ntl-view.[ch]: Better error handling.
* src/file-manager/fm-directory-view.c (display_selection_info): Send a 'selection change' request.
* src/ntl-window-msgs.c: Totally rewrite the state changing machine. Now handles errors slightly
  better.
* src/ntl-types.h: Remove requesting_view from the navigation info.
* src/ntl-window.h: Move all the state machine stuff into NautilusWindow itself.
* src/ntl-window.c: Update for new 'stop doing stuff' API.