Make test.dart use the path of the running script to find the Dart checkout.

tools/testing/dart/status_file_parser.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #library("status_file_parser");
 
 #import("dart:io");
 #import("status_expression.dart");
 
 // Possible outcomes of running a test.
 final CRASH = "crash";
@@ skipping 15 matching lines @@
   BooleanExpression condition;
   List<TestRule> testRules;
 
   Section.always() : condition = null, testRules = new List<TestRule>();
   Section(this.condition) : testRules = new List<TestRule>();
 
   bool isEnabled(environment) =>
       condition == null || condition.evaluate(environment);
 }
 
-
-// Helper method to be able to run the test from the runtime
-// directory, or the top directory.
-String getFilename(String path) =>
-    new File(path).existsSync() ? path : '../$path';
-
-String getDirname(String path) =>
-    new Directory(path).existsSync() ? path : '../$path';
-
 void ReadTestExpectationsInto(TestExpectations expectations,
                               String statusFilePath,
                               environment,
                               onDone) {
   List<Section> sections = new List<Section>();
 
   void sectionsRead() {
     for (Section section in sections) {
       if (section.isEnabled(environment)) {
         for (var rule in section.testRules) {
           expectations.addRule(rule, environment);
         }
       }
     }
     onDone();
   }
 
   ReadConfigurationInto(statusFilePath, sections, sectionsRead);
 }
 
 void ReadConfigurationInto(path, sections, onDone) {
-  File file = new File(getFilename(path));
+  File file = new File(path);
   if (!file.existsSync()) return;  // TODO(whesse): Handle missing file.
   InputStream file_stream = file.openInputStream();
   StringInputStream lines = new StringInputStream(file_stream);
 
   Section current = new Section.always();
   sections.add(current);
   String prefix = "";
 
   lines.lineHandler = () {
     String line;
@@ skipping 165 matching lines @@
         }
         regExps[i] = regExp;
       }
       _keyToRegExps[key] = regExps;
     });
 
     _regExpCache = null;
     _preprocessed = true;
   }
 }