Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Remove original license disclaimer.
Add Caldera license.

Approved by: David Taylor <davidt@caldera.com>

Make roughly buildable under FreeBSD.

The results are not perfect: the original Makefile referred to a refer
file papers/Ind, which doesn't seem to have been kept, so the
references to other publications are missing. In addition, the
pagination is not correct, with the result that some .DS/.DE blocks
leave large amounts of white space empty before them. Possibly this
could be fixed by putting the (blank) footnotes at the end.

PR: 35345
Requested by: Tony Finch <fanf@dotat.at>

Initial checkin: 4.4BSD version. These files need to be updated with
current license information and adapted to the FreeBSD build
environment before they will build.

Approved by: David Taylor <davidt@caldera.com>