- Preserve timestamps when copying files into the CDs
- Make sure build.sh can run in -e (stop on error) mode
- Report if packages needed by debootstrap is missing on a CD
- Report how much space is reserved on each CD
- Handle boot-floppy directories without documentation
first CD where possible. We then make 2 copies of this, one with
non-US and one without. Useful for people wanting to create non-US and
US-safe CD sets without having to spend so much disk space.
Side-effects: The CD tress are now $(DIR)/CD<foo> instead of
$(DIR)/<foo>