tcpdump security, bug fix, and enhancement update

[14:4.9.0-5]

• Resolves: #1441597; use bigger capture buffer than in upstream

[14:4.9.0-4]

• Drop downstream patch (drop root privileges)
• Add libcap-ng as a new build dependency
• Related: #1262283

[14:4.9.0-3]

• Fix tests according to our patches and libpcap version

[14:4.9.0-2]

• Use getnameinfo instead of gethostbyaddr

[14:4.9.0-1]

• New upstream version 4.9.0. Resolves: #1422473
• Add legacy -P switch with warning. Related to #1422473 and #1292056

[14:4.5.1-6]

• Drop root before creating any dump file. Resolves: #1262283

[14:4.5.1-5]

• Use -Q instead of -P to set capture direction. Resolves: #1292056

[14:4.5.1-4]

• Fix segfault with --help option. Resolves: #1297812