MFH: r441244

Update to 4.7.5

Changes: https://wordpress.org/news/2017/05/wordpress-4-7-5/
PR: 219368
Submitted by: Mikhail Timofeev <9267096@gmail.com> (maintainer)
Security: http://vuxml.freebsd.org/freebsd/a5bb7ea0-3e58-11e7-94a2-00e04c1ea73d.html

Approved by: ports-secteam (myself)