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

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

Revert r256095, r256120 (partial), r256121:

r256095:
- Add gnu/usr.bin/rcs back to the base system.

r256120:
- Add WITHOUT_RCS back to src.conf.5.

r256121:
- Remove UPDATING entry regarding gnu/usr.bin/rcs removal.

Requested by: many
Approved by: re (marius)
Discussed with: core

$Id$ -> $FreeBSD$

Add missing *roff macros to correct display about -V option.

PR: docs/4162
Submitted by: Kazuo Horikawa <k-horik@yk.rim.or.jp

Revert $FreeBSD$ 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.

This commit was generated by cvs2svn to compensate for changes in r11891,
which included commits to RCS files with non-trunk default branches.

Update makefiles:
centralize obj/noobj conditional in Makefile.inc
use DPADD
don't compile profiling library
install rcsfreeze correctly
After this commit, the freebsd and netbsd rcs distribution will be in sync.

Really cleaned up obj/noobj this time (same as I did with CVS)

Fixed cvs to work with/without object directories and added missing rcslean
directory to top level makefile.

This commit was generated by cvs2svn to compensate for changes in r9,
which included commits to RCS files with non-trunk default branches.