Bug#570314: Bugs mentioned in discussion spun off

[Shai Berger]

retitle 570314 nautilus: --no-desktop should imply exit_with_last_window and !media_automount_open
thanks

I spun off issues raised in this discussion to bugs #576384 and #576386.

Although subtly so, they are not dupes of this bug: This
one calls for optimal --no-desktop behavior by default,
as I understand it; the others are features which I think
should be supported regardless of defaults.

Thanks,
	Shai.