Remove $FreeBSD$: one-line .c comment pattern

Remove /^/[*/]\s*\$FreeBSD\$.*\n/

ipf/libipf: Fix typos

Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/653

ipfilter userland: Style(9) requires a space after return

Reported by: jrtc27
Fixes: 2582ae5740181e0d2bab10003d66ae91c9b56329
MFC after: 1 month

ipfilter: Adjust userland returns to conform to style(9)

Adjust ipfilter's userland return statements to conform to style(9).

MFC after: 1 month

ipfilter: Move userland bits to sbin

Through fixes and improvements our ipfilter sources have diverged
enough to warrant move from contrib into sbin/ipf. Now that I'm
planning on implementing MSS cl

ipfilter: Move userland bits to sbin

Through fixes and improvements our ipfilter sources have diverged
enough to warrant move from contrib into sbin/ipf. Now that I'm
planning on implementing MSS clamping as in iptables it makes more
sense to move ipfilter to sbin.

This is the second of three commits of the ipfilter move.

Suggested by glebius on two occaions.

Suggested by and discussed with: glebius
Reviewed by: glebius, kp (for #network)
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D33510

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Update ipfilter 4.1.28 --> 5.1.2.

Approved by: glebius (mentor)
BSD Licensed by: Darren Reed <darrenr@reed.wattle.id.au> (author)

- Prevent buffer overflow in IPFilter's load_http function used to load
ipfilter tables via http by the user-level ippool utility. Previously
the 1024-byte buffer used to store a http request cou

- Prevent buffer overflow in IPFilter's load_http function used to load
ipfilter tables via http by the user-level ippool utility. Previously
the 1024-byte buffer used to store a http request coudld easily overflow
if the length of the hostname part of the url passes exceeded 496 bytes. [1]
- Use snprintf to prevent possieble buffer overflows in future. [2]
- Do not try to close the descriptor twice on failure. [2]

Reported by: Maksymilian Arciemowicz <cxib@securityreason.com> [1]
Obtained from: NetBSD CVS [2]
MFC after: 2 weeks

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Import IPFilter 4.1.23 to vendor branch.
See src/contrib/ipfilter/HISTORY for details of changes since 4.1.13