• update to 6.49BETA5
• use DOCS instead PORTDOCS
• remove gcc workaround [1]
• (hopefully) use the correct __FreeBSD_version for SOCK_RAW

Changelog:
https://nmap.org/changelog.html

PR: 196065 [1]
PR: 200558 [2]
PR: 202139 [3]

Submitted by: sbruno@ , mikael.urankar@gmail.com [1]
Submitted by: truckman@ [2]
Submitted by: trasz@ [3]