Move testing.json and status files to more natural locations.

pkg/front_end/test/fasta/parser/parser_suite.dart

 // Copyright (c) 2016, 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.md file.
 
 import 'package:testing/testing.dart';
 
 import 'package:front_end/src/fasta/scanner.dart';
 
 import 'package:front_end/src/fasta/testing/scanner_chain.dart';
 
@@ skipping 24 matching lines @@
         return fail(null, errors.join("\n"));
       }
     } on ParserError catch (e, s) {
       return fail(null, e, s);
     }
     return pass(null);
   }
 }
 
 main(List<String> arguments) =>
-    runMe(arguments, createContext, "../testing.json");
+    runMe(arguments, createContext, "../../../testing.json");