Fixed bug 4037 (Error dialog every time on launch when
	permissions are set strangely)

	Fixed bug 1115 (Need better name for "User Directory"
	and "User Data Directory")

	* libnautilus-extensions/nautilus-file-utilities.c:
	(nautilus_get_user_main_directory): Removed g_warning when
	Nautilus fails to create ~/Nautilus directory, improved
	FIXME comments.
	(nautilus_get_user_directory), (nautilus_get_desktop_directory):
	Added FIXME comments.

	* src/nautilus-application.c:
	(check_required_directories): Renamed from nautilus_application_
	check_user_directories; now returns FALSE if any required
	directories were not created. Reworded error dialog to mention
	directories by path rather than using confusing invented symbolic
	names, and to tell the user to address the problem by creating
	specified directories or setting permissions such that Nautilus
	can create specified directories. (It used to say "restart
	Nautilus", which was pretty much guaranteed to have no effect.)
	(nautilus_application_startup): Now returns if
	check_required_directories fails. The user has to address the
	problem described in the error message before Nautilus will
	launch.