sysutils/ezjail: Update 3.4.2 => 3.4.3

Changelog:

• Install man pages to $DEST/share/man, not $DEST/man.
• Make distribution now needs to be called from /usr/src, not /usr/src/etc.
• Fix tyop: snapshot => snapshots.
• Incorporate fixes from port: provide shutdown script.
• for freebsdup-update -b, --currently-running now is mandatory.
• Fix superfluous asteriks in multiplication.
• Fix man page typos.
• Typo fixes.
• Incorporate Makefile patch from port.

Improve port:

• Replace PORTVERSION with DISTVERSION.
• Add LICENSE block.
• Sort plist.

PR: 296424
Sponsored by: UNIS Labs
Co-authored-by: Vladimir Druzenko <vvd@FreeBSD.org>