More SQL command (drop table, drop database)

delete, select & insert upgraded 
More utility function (node to array, arrayToNode)
XMLDB special move command
PHP Unit Test

simpletest/test/bad_test_suite.php

@@ -0,0 +1,10 @@
+<?php
+require_once(dirname(__FILE__) . '/../autorun.php');
+
+class BadTestCases extends TestSuite {
+    function BadTestCases() {
+        $this->TestSuite('Two bad test cases');
+        $this->addFile(dirname(__FILE__) . '/support/empty_test_file.php');
+    }
+}
+?>