Simplify the settings for filesystem paths
- Hosting environments like WPEngine don't permit (extra) .php files located in the webroot (apparently)
- Caching generated content there means potential for info leakage or execution via input variables
- Filesystem caching can be inefficient compared to other caches
- Herb has done work to get Smarty caching via Redis?
- https://www.drupal.org/node/2570335
- https://forum.civicrm.org/index.php?topic=35125.0;nowap
- https://issues.civicrm.org/jira/browse/CRM-17401
- https://github.com/freeform/civicrm-drupal-pantheon/blob/4.6.x/patches/smarty-redis-civi-cache.patch
- would Smarty 2 choke if we just set the path to redis:// ?
- .php extension is tacked on here, may be other places to change this