Update the style to one sentence per line, as is currently used in the FreeBSD
document project. Make the links to the handbook clickable.

Updated from https://github.com/freebsd/atf

This is the first Git commit to src.

Sponsored by:	The FreeBSD Foundation

This is the last Subversion commit to src.

Sponsored by:	The FreeBSD Foundation

Sponsored by:	iX Systems, Inc.

This version makes dc exit after processing all commands passed via -e or -f
instead of waiting for more input on STDIN (add "-f -" to the command line
to emulate the behavior of versionm 3.1.3 and earlier, if desired).

The version and copyright message are no longer printed for interactive
sessions as was the case with the prior implementation in the FreeBSD base
system.

Obtained from:	https://git.yzena.com/gavin/bc

This release fixes a regression from traditional bc behavior in FreeBSD
with regard to "-e quit" being passed on the command line and add Spanish
message catalogs.

These implementations of the bc and dc programs offer a number of advantages
compared to the current implementations in the FreeBSD base system:

- They do not depend on external large number functions (i.e. no dependency
  on OpenSSL or any other large number library)

- They implements all features found in GNU bc/dc (with the exception of
  the forking of sub-processes, which the author of this version considers
  as a security issue).

- They are significantly faster than the current code in base (more than
  2 orders of magnitude in some of my tests, e.g. for 12345^100000).

- They should be fully compatible with all features and the behavior of the
  current implementations in FreeBSD (not formally verified).

- They support POSIX message catalogs and come with localized messages in
  Chinese, Dutch, English, French, German, Japanese, Polish, Portugueze,
  and Russian.

- They offer very detailed man-pages that provide far more information than
  the current ones.

Approved by:	imp
Obtained from:	https://git.yzena.com/gavin/bc
Differential Revision:	https://reviews.freebsd.org/D19982

Sponsored by:	Innovate UK

Security:	CVE-2020-12662, CVE-2020-12663

Libarchive 3.4.3

Relevant vendor changes:
  PR #1352: support negative zstd compression levels
  PR #1359: improve zstd version checking
  PR #1348: support RHT.security.selinux from GNU tar
  PR #1357: support for archives compressed with pzstd
  PR #1367: fix issues in acl tests
  PR #1372: child handling cleanup
  PR #1378: fix memory leak from passphrase callback

Approved by:	trasz (mentor)
MFC after:	1 month
Sponsored by:	Conclusive Engineering

Imported at 0.13 plus assumulated changes to git hash a685f91.

Obtained from:	https://github.com/jmmv/kyua
Sponsored by:	DARPA

More information at: https://roy.marples.name/projects/openresolv

Upstream changes:
5. PR/113: Sobomax: avoid infinite loops for -c commands when stdout is
   not a tty.
4. Avoid infinite loops during history loads when merging, print a better
   error for errors during history load.
3. PR/88: Preserve empty arguments in :q
2. PR/94: Small apple issues (SAVESIGVEC, HOSTTYPE)
1. PR/81: Fix range matching issue where we were comparing with the
   range character instead of the start of range. [l-z]* would match foo

Reported by:	sobomax

Git ID a1961c91b02a92f3c6ed8b145c636ac4c5565aca

Sponsored by:	DARPA, AFRL