usr.bin: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

Remove $FreeBSD$: one-line nroff pattern

Remove /^\.\\"\s*\$FreeBSD\$$\n/

update external URL

Fix a few mandoc issues

- no blank before trailing delimiter
- whitespace at end of input line
- sections out of conventional order
- normalizing date format
- AUTHORS section without An macro

Add support for the TFTP windowsize option described in RFC 7440.

The windowsize option permits multiple blocks to be transmitted
before the receiver sends an ACK improving throughput for larger
files.

Reviewed by: asomers
MFC after: 2 weeks
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D23836

tftp(1): switch default transfer mode to binary

netascii is obsolete and inefficient. It isn't even supported by many
clients. Better to use binary mode by default.

Reviewed by: cem
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D16869

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by: Jan Schaumann <jschauma@stevens.edu>
Pull Request: https://github.com/freebsd/freebsd/pull/96

General mdoc(7) and typo fixes.

PR: 167696
Submitted by: Nobuyuki Koganemaru (kogane!jp.freebsd.org)
MFC after: 3 days

Remove trailing whitespace per mdoc lint warning

Disussed with: gavin
No objection from: doc
Approved by: joel
MFC after: 3 days

Only use macros inside a reference block.

Discussed with: brueffer

Acknowledge Edwin Groothuis for the major rewrite he
did of the tftpd and tftp code to support TFTP blocksize.

Update references to RFC's that the newer TFTP implementation supports.

Bump date.
Document the following commands which were added in the new TFTP implementation:
blocksize, blocksize2, packetdrop, options, rollover

Clarify that the TFTP blocksize (RFC2348) or non-standard
TFTP rollover option can be used to transfer larger files.

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.

Discussed with: imp, rwatson

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

Go ahead and merge the work edwin@ on tftpd into the tree. It is a
lot better than what's in the tree now. Edwin tested it at a prior
employer, but can't test it today. I've found that it works a lot
better with the various uboot versions that I've used in my embedded
work. Here's the pkg-descr from the port that describes the changes:

It all started when we got some new routers, which told me the
following when trying to upload configuration or download images
from it: The TFTP server doesn't support the blocksize option.

My curiousity was triggered, it took me some reading of RFCs and
other documentation to find out what was possible and what could
be done. Was plain TFTP very simple in its handshake, TFTP with
options was kind of messy because of its backwards capability: The
first packet returned could either be an acknowledgement of options,
or the first data packet.

Going through the source code of src/libexec/tftpd and going through
the code of src/usr.bin/tftp showed that there was a lot of duplicate
code, and the addition of options would only increase the amount
of duplicate code. After all, both the client and the server can
act as a sender and receiver.

At the end, it ended up with a nearly complete rewrite of the tftp
client and server. It has been tested against the following TFTP
clients and servers:

- Itself (yay!)
- The standard FreeBSD tftp client and server
- The Fedora Core 6 tftp client and server
- Cisco router tftp client
- Extreme Networks tftp client

It supports the following RFCs:

RFC1350 - THE TFTP PROTOCOL (REVISION 2)
RFC2347 - TFTP Option Extension
RFC2348 - TFTP Blocksize Option
RFC2349 - TFTP Timeout Interval and Transfer Size Options
RFC3617 - Uniform Resource Identifier (URI) Scheme and Applicability
Statement for the Trivial File Transfer Protocol (TFTP)

It supports the following unofficial TFTP Options as described at
http://www.compuphase.com/tftp.htm:

blksize2 - Block size restricted to powers of 2, excluding protocol headers
rollover - Block counter roll-over (roll back to zero or to one)

From the tftp program point of view the following things are changed:

- New commands: "blocksize", "blocksize2", "rollover" and "options"
- Development features: "debug" and "packetdrop"

If you try this tftp/tftpd implementation, please let me know if
it works (or doesn't work) and against which implementaion so I can
get a list of confirmed working systems.

Author: Edwin Groothuis <edwin@FreeBSD.org>

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

- Import the HEAD csup code which is the basis for the cvsmode work.

Fix markup.

Sort sections.

Mechanically kill hard sentence breaks.

Bumped the document date.

tftp.1:
- Add the optional port argument to SYNOPSIS.
main.c:
- Sync usage with the manual page.

Approved by: trhodes (main.c part)
Obtained from: OpenBSD (jmc)
MFC after: 2 weeks

Make the description of the connect, get, and put commands clearer.

Reported by: Gary W. Swearingen <underway@comcast.net>
Submitted by: Jim Brown <jpb@sixshooter.v6.thrupoint.net> (original version)
Reviewed by: ru
PR: docs/36459
MFC after: 3 weeks

mdoc(7) police: markup polishing.

Approved by: re

mdoc(7) police: markup nits.

Backout copyright notice I broke by my previous commit.

Use `The .Nm utility'

IPv6 support for tftp/tftpd.

Obtained from: KAME
MFC after: 2 weeks

Remove whitespace at EOL.

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

mdoc(7) police: remove extraneous .Pp before and/or after .Sh.

Fix tftpd and tftp to support file transfers of over 65535 blocks
(about 31 MB - 32 MB).

Submitted (partially)
by: Pascal Hofstee <daeron@wit401305.student.utwente.nl>

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

$Id$ -> $FreeBSD$

Add $Id$, to make it simpler for members of the translation teams to
track.

The $Id$ line is normally at the bottom of the main comment block in the
man page, separated from the rest of the manpage by an empty comment,
like so;

.\" $Id$
.\"

If the immediately preceding comment is a @(#) format ID marker than the
the $Id$ will line up underneath it with no intervening blank lines.
Otherwise, an additional blank line is inserted.

Approved by: bde

Use err(3). 100 -> MAXHOSTNAMELEN from OpenBSD.
Obtained from: OpenBSD

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