libpcap: Update to 1.10.3
Prior to this MFC, the stable/13 libpcap was at version 1.9.1, which was
released over five years ago. Several CVEs have been identified in that
version. For a detailed list, see
https://www.tcpdump.org/public-cve-list.txt.
Reviewed by: kp (pf changes)
Sponsored by: The FreeBSD Foundation
(cherry picked from commit 6d1c946e916845d01062e146aad5395410da1e54)
(cherry picked from commit 0c59e0b4e5817f139ce28486085b2f196351c7a3)
(cherry picked from commit 512c553671bef26e93342d4ae1ec5f60d8ae112b)
(cherry picked from commit 6f9cba8f8b5efd16249633e52483ea351876b67b)
(cherry picked from commit 437f05885047c533cadf15b564729cfd0273d2fe)
Commit 437f05885047c533cadf15b564729cfd0273d2fe has been adapted to only
include the changes for the libpcap 1.10.3 update.