MFH: r462992

www/drupal7: Update to 7.57

Changelog: https://www.drupal.org/SA-CORE-2018-001

CVE-2017-6926
CVE-2017-6927
CVE-2017-6928
CVE-2017-6929
CVE-2017-6930
CVE-2017-6931
CVE-2017-6932

Security: 57580fcc-1a61-11e8-97e0-00e04c1ea73d

Approved by: ports-secteam (riggs)