Simpletest verbose directory is not properly created

[kenorb]

Drupal bug: http://drupal.org/node/943572

Latest Drupal code:
http://drupalcode.org/project/simpletest.git/blob/refs/heads/6.x-2.x:/drupal_web_test_case.php#l3108

Patch for Pressflow 6.26

Index: modules/simpletest/drupal_web_test_case.php
===================================================================
--- modules/simpletest/drupal_web_test_case.php (revision 7131)
+++ modules/simpletest/drupal_web_test_case.php (working copy)
@@ -2624,10 +2624,12 @@
   if ($original_file_directory) {
     $file_directory = $original_file_directory;
     $class = $test_class;
-    $verbose = variable_get('simpletest_verbose', FALSE);
-    $directory = $file_directory . '/simpletest/verbose';
-//    return file_prepare_directory($directory, FILE_CREATE_DIRECTORY);
-    return file_check_directory($directory, FILE_CREATE_DIRECTORY);
+    $verbose = variable_get('simpletest_verbose', TRUE);
+    $directory = $file_directory . '/simpletest';
+    file_check_directory($directory, FILE_CREATE_DIRECTORY);
+    $directory = $directory . '/verbose';
+    $writable = file_check_directory($directory, FILE_CREATE_DIRECTORY);
+    return $writable;
   }
   return FALSE;
 }