Vulnerable packages in ports tree 10/11

[Sevan / Venture37]

net/ntp
http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_Security_Vulner
databases/mariadb
https://mariadb.com/kb/en/mariadb/mariadb-10022-release-notes/
archivers/unzip CVE-2015-7696 CVE-2015-7697
net/openafs https://www.openafs.org/pages/security/OPENAFS-SA-2015-007.txt