manuals: Fix typos in -offset for .Bd and .Bl

The intended value is:
-offset indent
If there's any typo such that the value doesn't match the pre-defined
strings, then the offset is the same wid

manuals: Fix typos in -offset for .Bd and .Bl

The intended value is:
-offset indent
If there's any typo such that the value doesn't match the pre-defined
strings, then the offset is the same width as the value. So by chance,
"-offset -ident" ended up being a standard-width indent (since the
default indent is 6 chars, and "-ident" also has 6 chars), whereas
"-offset -indent" had a longer indent, and "-offset ident" had a shorter
one.

Signed-off-by: Graham Percival <gperciva@tarsnap.com>
Reviewed by: mhorne, Alexander Ziaee <concussious.bugzilla@runbox.com>
MFC after: 3 days
Sponsored by: Tarsnap Backup Inc.
Pull Request: https://github.com/freebsd/freebsd-src/pull/1436

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Connect mitigations(7) to the build

Also add some cross references.

Sponsored by: The FreeBSD Foundation

Remove $FreeBSD$: two-line nroff pattern

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

elfctl: update man page example for 'no' prefix

Reported by: Mark Millard on freebsd-current@
Fixes: c763f99d11fd ("elfctl: prefix disable flags with "no"")
MFC after: 1 week
Sponsored by: The Free

elfctl: update man page example for 'no' prefix

Reported by: Mark Millard on freebsd-current@
Fixes: c763f99d11fd ("elfctl: prefix disable flags with "no"")
MFC after: 1 week
Sponsored by: The FreeBSD Foundation

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elfctl: allow features to be specified by value

This will allow elfctl on older releases to set bits that are not yet
known there, so that the binary will have the correct settings applied
if run on

elfctl: allow features to be specified by value

This will allow elfctl on older releases to set bits that are not yet
known there, so that the binary will have the correct settings applied
if run on a later FreeBSD version.

PR: 252629 (related)
Suggested by: kib
Reviewed by: gbe (manpage, earlier), kib
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D28284

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elftcl: add -i flag to ignore unknown flags

This may allow an identical elfctl invocation to be used on multiple
FreeBSD versions, with features not implemented on older releases being
silently igno

elftcl: add -i flag to ignore unknown flags

This may allow an identical elfctl invocation to be used on multiple
FreeBSD versions, with features not implemented on older releases being
silently ignored.

PR: 252629 (related)
Reviewed by: kib
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D28130

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elfctl: update earliest FreeBSD revision to 12.2

elfctl has been merged to stable/12, and so will appear in FreeBSD 12.2

Reported by: Dewayne Geraghty
MFC after: 1 week
Sponsored by: The FreeBSD Fo

elfctl: update earliest FreeBSD revision to 12.2

elfctl has been merged to stable/12, and so will appear in FreeBSD 12.2

Reported by: Dewayne Geraghty
MFC after: 1 week
Sponsored by: The FreeBSD Foundation

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Merge ^/head r358466 through r358677.

Move ELF feature note tool to usr.bin/elfctl

elfctl is a tool for modifying the NT_FREEBSD_FEATURE_CTL ELF note,
which contains a set of flags for enabling or disabling vulnerability
mitigations and

Move ELF feature note tool to usr.bin/elfctl

elfctl is a tool for modifying the NT_FREEBSD_FEATURE_CTL ELF note,
which contains a set of flags for enabling or disabling vulnerability
mitigations and other features.

Reviewed by: csjp, kib
MFC after: 2 weeks
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23910

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