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)

Rever the previous changes. It turns out that it perfectly correct
for a makefile to set 'NO_MAN=' when the makefile is for a program
that will not create a man page.

Based on reaction from: ru bde

Switch these makefiles to use 'MAN=' to indicate they will not generate
a man page, instead of 'NO_MAN='. 'NO_MAN=' is something users would
set, not something a makefile should be using.

Based on comments by: des

Start the dreaded NOFOO -> NO_FOO conversion.

OK'ed by: core

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

More changes to use __FBSDID() for setting rcsids. For the filter
programs, minor Makefile changes are needed to find lp.cdefs.h.
For lpf.c, the 'sccsid' line is formatted to match style(9), and
a 'From:' is removed so the sccsid returns to what it was back
in the days of '-r CSRG' (1994).

Reviewed by: discussed with bde and obrien
MFC after: 15 days

Perform a major cleanup of the usr.sbin Makefiles.
These are not perfectly in agreement with each other style-wise, but they
are orders of orders of magnitude more consistent style-wise than before.

This commit was generated by cvs2svn to compensate for changes in r1553,
which included commits to RCS files with non-trunk default branches.

BSD 4.4 Lite usr.sbin Sources