MFH: r428417

lang/php56: Update PHP 5.6 from 5.6.28 to 5.6.29

Changelog: http://www.php.net/ChangeLog-5.php#5.6.29

PR: 215190
Submitted by: rustem.alimov@gmail.com
Approved by: mentors (implicit)
Approved by: ports-secteam (junovitch)