[Fedora-livecd-list] Only lazy unmount if umount doesn't succeed

[Bruno Wolff III]

On Fri, Jul 30, 2010 at 22:28:50 -0700,
  Jasper Hartline <jasper.hartline at gmail.com> wrote:
> Attached. Fixed for unmounting in both classes which have unmount.

Thanks. My plan is for this to go in the next rollup if we don't need it
sooner for testing. I'll hold off committing it to master until after
alpha in case we want to get some other patch in for the alpha with as
little else changing.