security/nmap: Update to 7.80
- Remove local patches incorporated upstream.
- Add patches to add missing libibverbs dependency when linking libpcap statically (required to allow build on FreeBSD >= 12.0). (See similar fix applied to port net-mgmt/dhcdrop in r499639).
Changes this release:
https://seclists.org/nmap-announce/2019/0
Approved by: ohauer (once phabricator review approved)