Switch from MD5 verification of all files (fdisk, slice images, tarballs) to proper digital signatures. Also includes the downloaded netbed-setup.pl script. The new version is incompatible with older versions of the CD, so check the CD version to see what script path to return, and whether to give it an MD5 or a digital signature pointer.
Switch from MD5 verification of all files (fdisk, slice images,
tarballs) to proper digital signatures. Also includes the downloaded
netbed-setup.pl script. The new version is incompatible with older
versions of the CD, so check the CD version to see what script path to
return, and whether to give it an MD5 or a digital signature pointer.

Add version 4 installation instructions, for new CD that Dave is going
to be playing with.

nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome