fixed problem where I accidentally changed the icons for disk
	drives that appear on the desktop when I only meant to change
	the hardware view.  Fixed by restoring the old icon, and using
	one with a different name in the hardware view.

	* components/hardware/nautilus-hardware-view.c:
	(setup_overview_form):
	use "i-harddrive.png" instead of "i-blockdev.png"

	* icons/Makefile.am:
	* icons/i-blockdev.png:
	* icons/i-harddrive.png:
	restored the old block device icon and added a new hard drive one.