Be a lot more lenient in the CentOS-3 disks we allow.
Be a lot more lenient in the CentOS-3 disks we allow.

It turns out that basically any bootable CentOS-3
disk can be used as an installation disk.  Relax the
restrictions so that these pass.

Signed-off-by: Chris Lalancette <281cd07d7578d97c83271fbbf2faddb83ab3791c@gmail.com>

imcleod/oz,ndonegan/oz,moofrank/oz,imcleod/oz,cernops/oz,moofrank/oz,NeilBryant/oz,nullr0ute/oz,clalancette/oz,mgagne/oz,clalancette/oz,NeilBryant/oz,nullr0ute/oz,cernops/oz,ndonegan/oz,mgagne/oz