Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

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

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

For variables that are only checked with defined(), don't provide
any fake value.

PRINTERDEVICE can now take multiple values.

Index is unique for each PRINTERDEVICE.

Abuse .for so that the variable expansion works inside the N modifier.
This won't be a simple abuse with the next version of bsd.doc.mk
which will support multi-value PRINTERDEVICE.

bsd.doc.mk changes:

Don't gratuitously pipe thru a cat(1) if NODOCCOMPRESS.

Only create _stamp.extra when necessary.

Get rid of SOELIMPP and OBJS.

Use Groff version of soelim(1); we need its -I option
for the following to work.

Don't needlessly chdir to SRCDIR. Only a few documents
need CD_HACK, and those that need it either use refer(1)
or .PSPIC macro which internally uses the .psbb call.

Make it works with POSIX sort (POS arg)
All old sorts understand -k too.

Eliminate a few more groff(1) warnings.

Starting from groff(1) version 1.12, -msafer is now the default,
but index building for 13.viref requires the use of .sy request.
Repair the index building by running groff(1) in unsafe -U mode.

Requested by: bde

$Id$ -> $FreeBSD$

Don't use `::' to break dependencies. Cleaned some nearby things.

Revert $FreeBSD$ back to $Id$

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

Use the src/contrib sources from nvi-1.79

Fixed buggy generation of index.so. The roff command to generate it was
a little different than the one to generate the document. This caused
wrong page numbers.

Fixed sourcing of index.so. The hack of handling it separately is no
longer necessary. This hack didn't quite work - the page numbers and
columnization of the index were wrong.

Fixed warnings about not being able to source index.so.

Fixed generation of `index' in the source directory.

Don't bother removing `index' after creating index.so. `index' gets
created again when the final document is built and it's too much
trouble to remove later.

Fixed dependencies. The long {SRCS} list in 4.4lite isn't quite
right and got broken to allow centralized rules.

Remove trailing whitespace.

Get the USD to format under the new structure.