Fix disabled APCu
Fix disabled APCu

This change fixes #45 error:
```
PHP Fatal error:  APCuIterator::__construct(): APC must be enabled to use APCuIterator in /data/upload/include/class.search.php on line 966
```
CampbellSoftwareSolutions/docker-osticket,CampbellSoftwareSolutions/docker-osticket