Imports code from RippingCluster project

Imports all generic classes from the RippingCluster project, with any ripping-specific code stripped out.
Tested against a dummy project for errors.

source/lib/Sihnon/BackgroundTask.class.php

@@ -0,0 +1,17 @@
+<?php
+
+class Sihnon_BackgroundTask {
+
+    protected function __construct() {
+        
+    }
+
+    public static function run($command) {
+        $pipes = array();
+        $pid = proc_open($command . ' &', array(), $pipes);
+        proc_close($pid);
+    }
+    
+};
+
+?>