openssh: update to OpenSSH v8.7p1

Some notable changes, from upstream's release notes:

- sshd(8): Remove support for obsolete "host/port" syntax.
- ssh(1): When prompting whether to record a new ho

openssh: update to OpenSSH v8.7p1

Some notable changes, from upstream's release notes:

- sshd(8): Remove support for obsolete "host/port" syntax.
- ssh(1): When prompting whether to record a new host key, accept the key
fingerprint as a synonym for "yes".
- ssh-keygen(1): when acting as a CA and signing certificates with an RSA
key, default to using the rsa-sha2-512 signature algorithm.
- ssh(1), sshd(8), ssh-keygen(1): this release removes the "ssh-rsa"
(RSA/SHA1) algorithm from those accepted for certificate signatures.
- ssh-sk-helper(8): this is a new binary. It is used by the FIDO/U2F
support to provide address-space isolation for token middleware
libraries (including the internal one).
- ssh(1): this release enables UpdateHostkeys by default subject to some
conservative preconditions.
- scp(1): this release changes the behaviour of remote to remote copies
(e.g. "scp host-a:/path host-b:") to transfer through the local host
by default.
- scp(1): experimental support for transfers using the SFTP protocol as
a replacement for the venerable SCP/RCP protocol that it has
traditionally used.

Additional integration work is needed to support FIDO/U2F in the base
system.

Deprecation Notice
------------------

OpenSSH will disable the ssh-rsa signature scheme by default in the
next release.

Reviewed by: imp
MFC after: 1 month
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D29985

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Upgrade to OpenSSH 7.7p1.

Upgrade to OpenSSH 7.4p1.

Upgrade to OpenSSH 7.3p1.

More files which no longer have any local changes.

Resolve conflicts.

Vendor import of OpenSSH 4.0p1.

Resolve conflicts

Vendor import of OpenSSH 3.9p1.

Resolve conflicts.

Vendor import of OpenSSH 3.8.1p1.

Resolve conflicts.

Vendor import of OpenSSH 3.8p1.

Resolve conflicts and remove obsolete files.

Sponsored by: registrar.no

Vendor import of OpenSSH 3.7.1p2.

If possible, use pthreads instead of a child process for PAM.

Reimplement the necessary bits from auth_pam.c and auth2_pam.c so that
they share the PAM context used by the keyboard-interactive threa

If possible, use pthreads instead of a child process for PAM.

Reimplement the necessary bits from auth_pam.c and auth2_pam.c so that
they share the PAM context used by the keyboard-interactive thread. If
a child process is used instead, they will (necessarily) use a separate
context.

Constify do_pam_account() and do_pam_session().

Sponsored by: DARPA, NAI Labs

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Resolve conflicts.

Vendor import of OpenSSH-portable 3.5p1.

Forcibly revert to mainline.

Vendor import of OpenSSH 3.3p1.

Finish committing _more_ somehow-uncommitted OpenSSH 2.9 updates.
(Missing Delta Brigade, tally-ho!)

Update to OpenSSH 2.3.0 with FreeBSD modifications. OpenSSH 2.3.0
new features description elided in favor of checking out their
website.

Important new FreeBSD-version stuff: PAM support has been w

Update to OpenSSH 2.3.0 with FreeBSD modifications. OpenSSH 2.3.0
new features description elided in favor of checking out their
website.

Important new FreeBSD-version stuff: PAM support has been worked
in, partially from the "Unix" OpenSSH version, and a lot due to the
work of Eivind Eklend, too.

This requires at least the following in pam.conf:

sshd auth sufficient pam_skey.so
sshd auth required pam_unix.so try_first_pass
sshd session required pam_permit.so

Parts by: Eivind Eklend <eivind@FreeBSD.org>

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More files which no longer have any local changes.

Resolve conflicts.

Vendor import of OpenSSH 4.0p1.