MFC r351070: telnet: remove 3rd clause from Berkeley copyrights

Per the July 22, 1999 letter (in /COPYRIGHT) from
William Hoskins
Director, Office of Technology Licensing
University of California, Berkeley

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

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

List authentication types supported with "-X" taken from the libtelnet
code.

PR: 121721

- Soften sentence breaks.
- Remove double whitespace.
- Sort sections.

o Make telnet[d] -S (IP TOS) flag really work. We do not have
/etc/iptos implementation so only numeric values supported.

o telnetd.8: steal the -S flag description from telnet.1, bump
the date of the document.

MFC after: 6 weeks

o Add -4 and -6 flags to a man page and usage(). Bump the man page
date.

mdoc(7) police: remove -r from SYNOPSIS, sort -p in DESCRIPTION.

Fixed bugs from previous revision.

Removed -s from SYNOPSIS and restored -S in DESCRIPTION.

Very large style makeover.

1) ANSIfy.
2) Clean up ifdefs so that
a) ones that never/always apply are appropriately either
fully removed, or just the #if junk is removed.
b) change #if defined(FOO) for appropiate values of FOO.
(currently AUTHENTICATION and ENCRYPTION)
3) WARNS=2 fixing
4) GC other unused stuff

This code can now be unifdef(1)ed to make non-crypto telnet.

Manually unifdef(1) CRAY, UNICOS, hpux and sun uselsess code.

Remove description of an option that only applies to UNICOS < 7.0.
That define may still be present in the source, but I don't think
anyone has plans to try to use it.

Obtained from: NetBSD

Code merge and diff reduce with "base" telnet. This is the "later"
telnet, so it was treated as the reference code, except where later
commits were made to "base" telnet.

mdoc(7) police: s/BSD/.Bx/ where appropriate.

mdoc(7) police: removed HISTORY info from the .Os call.

mdoc(7) police: split punctuation characters + misc fixes.

Prepare for mdoc(7)NG.

mdoc(7) police: use the new features of the Nm macro.

Avoid use of direct troff requests in mdoc(7) manual pages.

Forced commit. This is to try and help folks that used the international
crypto repo and have slightly different files but with the same version.
cvsup in 'checkout mode' has no trouble with this, but cvs can get really
silly about it.

Freefall/Internat diff reducer.

another tcp apps IPv6 updates.(should be make world safe)
ftp, telnet, ftpd, faithd
also telnet related sync with crypto, secure, kerberosIV

Obtained from: KAME project

MFC: no \n in syslog strings. Change -P to -p in flags. EOF -> -1. Use err(3).

Bring the FreeBSD changes to the virgin sources.

This commit was generated by cvs2svn to compensate for changes in r29088,
which included commits to RCS files with non-trunk default branches.

Initial import of BSD telnet. This will be used to build the kerberised
telnet, and after userland diffs have been merged in, will be used to
build the non-kerberised sources as well. (See unifdef(1) for details)