o MFC: r204556, r204628

o MFC: r204556, r204628

  Move csup away from contrib/ and into usr.bin/. Software is no longer
  contributed, and main development is happening in the FreeBSD repo.

o MFC: r204558

  Unmark authentication support as a TODO item.

o MFC: r204629

  Remove unused include path.

o MFC: r204639

  Include CURDIR in case the makefile is not run from the same directory.

o MFC: r204664

  Fix spelling.

o MFC: r206621

  Add and expand $FreeBSD$ keyword to allow committing to this file.

o MFC: r206622 (partial)

  mdoc: order prologue macros consistently by Dd/Dt/Os

  Although groff_mdoc(7) gives another impression, this is the ordering
  most widely used and also required by mdocml/mandoc.

o MFC: r208291 (partial)

  mdoc: consistently spell our email addresses <foo@FreeBSD.org>

o MFC: r210874

  Don't point users at the old csup homepage.

o MFC: r213300

  If an RCS file is truncated, rcsfile_getdelta() will return NULL.  Instead
  of faulting, check for NULL.  However, returning an error would cause csup
  to just abort the entire update.  Instead, break out of the loop and
  return ok.  The attempts to update the file will trigger a MD5 failure which
  will cause csup to download the entire file as a fixup.

o MFC: r213573 (partial)

  mdoc: drop redundant .Pp and .LP calls

  They have no effect when coming in pairs, or before .Bl/.Bd

o MFC: r216370 (partial)

  Remove the advertising clause from UCB copyrighted files in usr.bin.  This
  is in accordance with the information provided at
  ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change

  Also add $FreeBSD$ to a few files to keep svn happy.

o MFC: r216542

  Signal that data should not be modified.

o MFC: r217858

  Remove dead code.

o MFC: r225535

  Fix csup to allow case insensitive server names in the auth file,
  just as advertised in the manpage.

  PR:	158652

o MFC: r225536

  Fix typos in error messages.

o MFC: r225979

  Update the comment to reflect what is actually going on.

o MFC: r225980

  Handle the situation where fixups_close() has been called but more fixups
  are still available on the queue.

o MFC: r228625

  In usr.bin/csup/auth.c, use the correct number of bytes for zeroing the
  shared secret, and use long long format to snprintf a time_t.

o MFC: r228626

  In usr.bin/csup/proto.c, use the correct printf length modifier to print
  an off_t.

o MFC: r228667

  In usr.bin/csup/auth.c, cast time_t to intmax_t instead, and use the
  corresponding printf length modifier.

o MFC: r228857

  On FreeBSD just use the MD5 implementation of libmd rather than that of
  libcrypto so we don't need to relinquish csup when world is built without
  OpenSSL.

git-svn-id: svn://svn.freebsd.org/base/stable/8@230744 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f