cli.php wrapper for cronjob is not joomla compatible

the cli.php file, which is used to authenticate and process bin scripts run over command line cronjobs, currently requires the CIVICRM_CONFDIR constant be set. that constant is normally only set for Drupal multisite implementations where the sites folder is in a non-standard location. in other words – requiring it breaks the ability to run crons from the CLI for joomla altogether, and is a pain for the majority of Drupal users with either a single-site installation or a standard multisite.

attached patch fixes it.