* libnautilus-extensions/Makefile.am:
	* libnautilus-extensions/nautilus-directory-notify.h:
	* libnautilus-extensions/nautilus-directory-private.h:
	* libnautilus-extensions/nautilus-file-changes-queue.c:
	* libnautilus-extensions/nautilus-link.c:
	* libnautilus-extensions/nautilus-volume-monitor.c:
	Moved the notify calls to a separate header, since people were
	using them as an excuse to peek at NautilusDirectory's privates.

	* libnautilus-extensions/nautilus-directory.c:
	(nautilus_directory_get_internal), (nautilus_directory_get),
	(nautilus_directory_get_existing): Cleaned up API so that
	internal code can get a directory without creating one.
	(get_parent_directory_if_exists): Used new API to cut down
	code a bit.
	(nautilus_directory_notify_files_removed),
	(nautilus_directory_notify_files_moved): Always create a
	NautilusFile object. This results in a bit more work, but is
	more compatible with the 1/2 done symbolic link change notify
	work.

	* libnautilus-extensions/nautilus-file.c:
	(nautilus_file_get_internal): Don't create a new directory if
	being called in the mode where we don't create a new file.
	(update_link), (get_link_files),
	(update_links_if_target), (nautilus_file_update_info),
	(nautilus_file_mark_gone), (nautilus_file_emit_changed):
	More work on notifying links about changes to the target file.
	This isn't quite working and isn't required so I'll get back to it
	later. At the moment it is not doing any harm.