- Enhance CDROM boot to include some documentation at boot time.

- NOTE. The CDROM will not boot 2.6 kernels because the
    boot sequence has changed significantly. Updates to come
    later.
- Add memtest option to CDROM boot.
- Include Nicolas' changes to fix llist JobMedia records.
- Make sure that ClientRunBefore/After messages from the program
  are terminated with a newline. Add strerror to output error
  messages.
- Return program exit status code in Win32.