MFH: r416928 r417366

www/piwik: Upgrade from 2.16.0 to 2.16.1

• Add missing depends
• The update also contains security fixes.

Changes: http://piwik.org/changelog/piwik-2-16-1/

PR: 210458
Approved by: pi (mentor)

Approved by: ports-secteam (with hat)