Add the floppy576 entry back, needed for release. Okay kettenis.

src/etc/etc.amd64/disktab

@@ -1,4 +1,10 @@
-#	$OpenBSD: disktab,v 1.10 2010/07/02 20:33:54 tedu Exp $
+#	$OpenBSD: disktab,v 1.11 2010/07/06 08:26:23 pirofti Exp $
+
+floppy576|3in|3.5in High Density Floppy, 5.76MB:\
+	:dt=floppy:ty=floppy:se#512:nt#2:rm#300:ns#36:nc#160:\
+	:pa#11520:oa#0:ba#4096:fa#512:ta=4.2BSD: \
+	:pb#11520:ob#0:\
+	:pc#11520:oc#0:
 
 floppy288|3in|3.5in High Density Floppy, 2.88MB:\
 	:dt=floppy:ty=floppy:se#512:nt#2:rm#300:ns#36:nc#80:\