diskless support for mkinitrd

[Mark McLoughlin <markmc redhat com>]

Hi,
	I've just opened this:

  http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=128175

	The bug is essentially about how we can sanely merge diskless[1]
support into mkinitrd. Attached to the bug is a diskless-mkinitrd which
is a separate mkinitrd script with diskless support.

	Just posting here so anybody who might be interested in the issue can
jump in.

Thanks,
Mark.

[1] - When I say "diskless", I mean that in the sense of a thin-client
booting with e.g PXE and NFS mounting its root directory.