Create Client Poller Script

This is a placeholder to create the client poller script. I'm mostly doing this to help document the process.

The client poller script will be a PHP script installed on the system that runs Cacti. It's generally placed in the /scripts directory. In this case, it will be a PHP script called drupal_stats.php.

As of right now, the script will use the PHP curl library to make the request to the Drupal server. This requires curl.so to be loaded as a PHP module on the Cacti server.

More to come.