Interleave 0 means concatenate serially, do not interleave.
This information was in the ccd(4) man page, but not
in ccdconfig(8) or ccd.conf(5).

move to my now standard 3-clause BSD license (remove advertising clause)

Seems I was overzealous. Undo part of last, noted by grant.

Fix copyright, and some minor mdoc improvements.

add ccd.conf(5)