Moved the testing scripts to the new import/library/part syntax

tools/testing/dart/test_options.dart

 // 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("test_options_parser");
+library test_options_parser;
 
-#import("dart:io");
-#import("dart:math");
-#import("drt_updater.dart");
-#import("test_suite.dart");
+import "dart:io";
+import "dart:math";
+import "drt_updater.dart";
+import "test_suite.dart";
 
 List<String> defaultTestSelectors =
     const ['dartc', 'samples', 'standalone', 'corelib', 'co19', 'language',
            'isolate', 'vm', 'html', 'json', 'benchmark_smoke',
            'utils', 'lib', 'pkg'];
 
 /**
  * Specification of a single test option.
  *
  * The name of the specification is used as the key for the option in
@@ skipping 648 matching lines @@
         return option;
       }
     }
     print('Unknown test option $name');
     exit(1);
   }
 
 
   List<_TestOptionSpecification> _options;
 }