New reorder of classes and configuration. New instantiation of Tasks.

Mage/Task/BuiltIn/Scm/Update.php

@@ -0,0 +1,26 @@
+<?php
+class Mage_Task_BuiltIn_Scm_Update
+    extends Mage_Task_TaskAbstract
+{
+    public function getName()
+    {
+        return 'SCM Update (built-in)';
+    }
+    
+    public function run($config)
+    {
+        switch ($config['scm']['type']) {
+            case 'git':
+                $command = 'git pull';
+                break;
+
+            case 'svn':
+                $command = 'svn update';
+                break;
+        }
+
+        $result = $this->_runLocalCommand($command);
+        
+        return $result;
+    }
+}