MFH (r322052): Upgrade OpenSSH to 7.5p1.

MFH (r314306,r314720): Upgrade OpenSSH to 7.4p1.

MFH (r314527,r314576,r314601,r317998): Upgrade OpenSSH to 7.3p1.

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

Upgrade to OpenSSH 7.2p2.

Remove RCS tags from files in which we no longer have any local
modifications, and add them to two files in which we do.

Upgrade to OpenSSH 6.9p1.

Upgrade to OpenSSH 6.8p1.

Upgrade to OpenSSH 6.7p1, retaining libwrap support (which has been removed
upstream) and a number of security fixes which we had already backported.

MFC after: 1 week

As previously threatened, remove the HPN patch from OpenSSH.

Remove /* $FreeBSD$ */ from files that already have __RCSID("$FreeBSD$").

Add a pre-merge script which reverts mechanical changes such as added
$FreeBSD$ tags and man page dates.

Add a post-merge script which reapplies these changes.

Run both scripts to normalize the existing code base. As a result, many
files which should have had $FreeBSD$ tags but didn't now have them.

Partly rewrite the upgrade instructions and remove the now outdated
list of tricks.

Upgrade to OpenSSH 6.5p1.

Upgrade to 6.3p1.

Approved by: re (gjb)

Upgrade OpenSSH to 6.1p1.

Upgrade to OpenSSH 5.9p1.

MFC after: 3 months

Enable keyword expansion for $FreeBSD$ on files where it was added it
r224638.

Submitted by: bz
Approved by: re (implicit)
Point hat to: brooks

Add support for dynamically adjusted buffers to allow the full use of
the bandwidth of long fat pipes (i.e. 100Mbps+ trans-oceanic or
trans-continental links). Bandwidth-delay products up to 64MB are
supported.

Also add support (not compiled by default) for the None cypher. The
None cypher can only be enabled on non-interactive sessions (those
without a pty where -T was not used) and must be enabled in both
the client and server configuration files and on the client command
line. Additionally, the None cypher will only be activated after
authentication is complete. To enable the None cypher you must add
-DNONE_CIPHER_ENABLED to CFLAGS via the make command line or in
/etc/make.conf.

This code is a style(9) compliant version of these features extracted
from the patches published at:

http://www.psc.edu/networking/projects/hpn-ssh/

Merging this patch has been a collaboration between me and Bjoern.

Reviewed by: bz
Approved by: re (kib), des (maintainer)

Upgrade to OpenSSH 5.8p2.

Upgrade to OpenSSH 5.6p1.

Upgrade to OpenSSH 5.4p1.

MFC after: 1 month

Upgrade to OpenSSH 5.2p1.

MFC after: 3 months

Upgrade to OpenSSH 5.1p1.

I have worked hard to reduce diffs against the vendor branch. One
notable change in that respect is that we no longer prefer DSA over
RSA - the reasons for doing so went away years ago. This may cause
some surprises, as ssh will warn about unknown host keys even for
hosts whose keys haven't changed.

MFC after: 6 weeks

Remove svn:keywords except on files that need it. This makes diffs
against the vendor branch much more readable.

Consistently set svn:eol-style.

This commit was generated by cvs2svn to compensate for changes in r162852,
which included commits to RCS files with non-trunk default branches.

Vendor import of OpenSSH 4.4p1.

Vendor import of OpenSSH 4.3p1.

Vendor import of OpenSSH 4.2p1.

Vendor import of OpenSSH 4.1p1.

Vendor import of OpenSSH 4.0p1.

Vendor import of OpenSSH 3.9p1.

Vendor import of OpenSSH 3.8p1.

Vendor import of OpenSSH 3.7.1p2.

Correct more cases of allocation size bookkeeping being updated before
calling functions which can potentially fail and cause cleanups to be
invoked.

Submitted by: Solar Designer <solar@openwall.com>

Vendor import of OpenSSH-portable 3.6.1p1.

Vendor import of OpenSSH 3.3p1.

Vendor import of OpenSSH 3.1

Say "hi" to the latest in the OpenSSH series, version 2.9!

Happy birthday to: rwatson