Making apc feature test rely on apc_dec.
Making apc feature test rely on apc_dec.

ZCS comes with a busted apc, and we need apc_dec to properly
use the ApcEngine anyways.

Fixes #2105


	See: cakephp/cakephp@d7155d374b9a10af08ec93955d03aa664093026a


QoboLtd/project-template-cakephp,ojengwa/cake-appengine,makallio85/fish-diary,QoboLtd/project-template-cakephp,QoboLtd/project-template-cakephp,QoboLtd/project-template-cakephp,makallio85/fish-diary,makallio85/fish-diary,ojengwa/cake-appengine,QoboLtd/project-template-cakephp