MFH: r445231

Update PHP 7 from 7.0.20 to 7.0.21

Changelog: http://www.php.net/ChangeLog-7.php#7.0.21

Also:

• Remove patch "patch-main_php__ini.c", has been patched upstream
• Remove CONFIGURE_ARGS for "--with-regex=*" and "--with-zend-vm=*", they are not supported anymore

PR: 220531
Submitted by: Dani <i.dani@outlook.com>
Reported by: Fabiano Sidler <fabianosidler@swissonline.ch>
Security: CVE-2017-9224
Security: CVE-2017-9226
Security: CVE-2017-9227
Security: CVE-2017-9228
Security: CVE-2017-9229
Differential Revision: https://reviews.freebsd.org/D11515

Approved by: ports-secteam (junovitch)