MFH: r386454

• Update to 4.2.2
• While I'm here, use DISTVERSIONSUFFIX instead of DISTNAME

Changes: https://ja.wordpress.org/2015/05/07/wordpress-4-2-2/
PR: 200189
Submitted by: Yoshisato Yanagisawa <osho@pcc-software.org>
Approved by: Joe Horn <joehorn@gmail.com> (maintainer)

Approved by: ports-secteam (delphij)