MFH: r414087

Security update net/ntp to 4.2.8p7.

Security: CVE-2015-7704
Security: CVE-2015-8138
Security: CVE-2016-1547
Security: CVE-2016-1548
Security: CVE-2016-1549
Security: CVE-2016-1550
Security: CVE-2016-1551
Security: CVE-2016-2516
Security: CVE-2016-2517
Security: CVE-2016-2518
Security: CVE-2016-2519
Security: b2487d9a-0c30-11e6-acd0-d050996490d0
Approved by: ports-secteam