[Frugalware-darcs] setup-current: call umount from the target system

[VMiklos]

[call umount from the target system
VMiklos <vmiklos at frugalware.org>**20051017211016
 seems that this is needed at least on x86_64
] {
hunk ./src/setup 783
-		umount /mnt/source
+		$target/bin/umount /mnt/source
}