MFH: r459413

databases/mariadb55-server: Security update to 5.5.59

Security: e3445736-fd01-11e7-ac58-b499baebfeaf
Security: CVE-2018-2562
Security: CVE-2018-2622
Security: CVE-2018-2640
Security: CVE-2018-2665
Security: CVE-2018-2668

Approved by: ports-secteam (swills)