heimdal: always confirm PA-PKINIT-KX for anon PKINIT

Import upstream 38c797e1a.

Upstream notes:

RFC8062 Section 7 requires verification of the PA-PKINIT-KX key
excahnge when anonymous PKIN

heimdal: always confirm PA-PKINIT-KX for anon PKINIT

Import upstream 38c797e1a.

Upstream notes:

RFC8062 Section 7 requires verification of the PA-PKINIT-KX key
excahnge when anonymous PKINIT is used. Failure to do so can
permit an active attacker to become a man-in-the-middle.

Reported by: emaste
Obtained from: upstream 38c797e1a
Security: CVE-2019-12098
MFC after: 1 week

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MFC

IFC @ r234692

sys/amd64/include/cpufunc.h
sys/amd64/include/fpu.h
sys/amd64/amd64/fpu.c
sys/amd64/vmm/vmm.c

- Add API to allow vmm FPU state init/save/restore.

FP stuff discussed with: kib

Merge head r232686 through r233825 into projects/pf/head.

- Update FreeBSD Heimdal distribution to version 1.5.1. This also brings
several new kerberos related libraries and applications to FreeBSD:
o kgetcred(1) allows one to manually get a ticket for

- Update FreeBSD Heimdal distribution to version 1.5.1. This also brings
several new kerberos related libraries and applications to FreeBSD:
o kgetcred(1) allows one to manually get a ticket for a particular service.
o kf(1) securily forwards ticket to another host through an authenticated
and encrypted stream.
o kcc(1) is an umbrella program around klist(1), kswitch(1), kgetcred(1)
and other user kerberos operations. klist and kswitch are just symlinks
to kcc(1) now.
o kswitch(1) allows you to easily switch between kerberos credentials if
you're running KCM.
o hxtool(1) is a certificate management tool to use with PKINIT.
o string2key(1) maps a password into key.
o kdigest(8) is a userland tool to access the KDC's digest interface.
o kimpersonate(8) creates a "fake" ticket for a service.

We also now install manpages for some lirbaries that were not installed
before, libheimntlm and libhx509.

- The new HEIMDAL version no longer supports Kerberos 4. All users are
recommended to switch to Kerberos 5.

- Weak ciphers are now disabled by default. To enable DES support (used
by telnet(8)), use "allow_weak_crypto" option in krb5.conf.

- libtelnet, pam_ksu and pam_krb5 are now compiled with error on warnings
disabled due to the function they use (krb5_get_err_text(3)) being
deprecated. I plan to work on this next.

- Heimdal's KDC now require sqlite to operate. We use the bundled version
and install it as libheimsqlite. If some other FreeBSD components will
require it in the future we can rename it to libbsdsqlite and use for these
components as well.

- This is not a latest Heimdal version, the new one was released while I was
working on the update. I will update it to 1.5.2 soon, as it fixes some
important bugs and security issues.

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Fix conflicts after heimdal-1.1 import and add build infrastructure. Import
all non-style changes made by heimdal to our own libgssapi.

Vendor import of Heimdal 1.1

Resolve conflicts.

Import of Heimdal Kerberos from KTH repository circa 2002/09/16.

Resolve conflicts after import of Heimdal Kerberos circa 2002/08/29.

Import of Heimdal Kerberos from KTH repository circa 2002/08/29.

Resolve conflicts after import of Heimdal Kerberos 2002/02/17.

Import of Heimdal Kerberos from KTH repository circa 2002/02/17.

fix merges from 0.3f

import of heimdal 0.3f

nuke conflict markers

fix conflicts in heimdal 0.3e import

import of heimdal 0.3e

Merge conflicts.

Import KTH Heimdal, which will be the core of our Kerberos5.
Userland to follow.

This commit was generated by cvs2svn to compensate for changes in r55682,
which included commits to RCS files with non-trunk default branches.

Fix conflicts after heimdal-1.1 import and add build infrastructure. Import
all non-style changes made by heimdal to our own libgssapi.

Vendor import of Heimdal 1.1

Resolve conflicts.

Import of Heimdal Kerberos from KTH repository circa 2002/09/16.