Allow Directory.create to create all missing path components.

tests/standalone/io/file_fuzz_test.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.
 
 // 'fuzz' test the file APIs by providing unexpected type arguments. The test
 // passes if the VM does not crash.
 
 #import('dart:io');
 #import('dart:isolate');
 
@@ skipping 66 matching lines @@
     });
     for (var p in typePermutations(2)) {
       doItSync(() => opened.writeStringSync(p[0], p[1]));
     }
     for (var p in typePermutations(3)) {
       doItSync(() => opened.readListSync(p[0], p[1], p[2]));
       doItSync(() => opened.writeListSync(p[0], p[1], p[2]));
     }
     opened.closeSync();
   }
-  temp.deleteRecursivelySync();
+  temp.deleteSync(recursive: true);
 }
 
 fuzzAsyncRandomAccessMethods() {
   var d = new Directory('');
   var temp = d.createTempSync();
   var file = new File('${temp.path}/x');
   file.createSync();
   var modes = [ FileMode.READ, FileMode.WRITE, FileMode.APPEND ];
   var futures = [];
   var openedFiles = [];
@@ skipping 10 matching lines @@
     }
     for (var p in typePermutations(3)) {
       futures.add(doItAsync(() => opened.readList(p[0], p[1], p[2])));
       futures.add(doItAsync(() => opened.writeList(p[0], p[1], p[2])));
     }
   }
   Futures.wait(futures).then((ignore) {
     for (var opened in openedFiles) {
       opened.closeSync();
     }
-    temp.deleteRecursivelySync();
+    temp.deleteSync(recursive: true);
   });
 }
 
 main() {
   fuzzSyncMethods();
   fuzzAsyncMethods();
   fuzzSyncRandomAccessMethods();
   fuzzAsyncRandomAccessMethods();
 }