VERSION file.
* Set the EDITOR variable in install.sub, so it will be set in both
upgrade & install.
* Make the checks on the presence of installation sets on the local
disks on upgrade more precise.
* Remove more&less from the list of standard binaries (I need more space!)
* When building an fstab from the users' fstab, drop lines starting with
a '#' and lines with an fstype that is not supported on the miniroot.
Make editor configurable (variable EDITOR, also usable by disklabel(8)).
Move disklabel(8) calls into `md_prep_label()'.
Eliminate two uses of `sed'.
Eliminate `awk' in upgrade.sh.
