Port and integrate the irregexp engine from V8

tests/language/regex/many-brackets_test.dart

Index: tests/language/regex/many-brackets_test.dart
diff --git a/tests/language/regex/many-brackets_test.dart b/tests/language/regex/many-brackets_test.dart
new file mode 100644
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--- /dev/null
+++ b/tests/language/regex/many-brackets_test.dart
@@ -0,0 +1,28 @@
+// Copyright (c) 2014, 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.
+
+import 'util.dart';
+import 'package:expect/expect.dart';
+
+void main() {
+  description(
+  'Test regular expression processing with many capturing brackets (200).'
+  );
+
+  var count = 200;
+
+  var regexp = "";
+  for (var i = 0; i < count; ++i)
+      regexp += "(";
+  regexp += "hello";
+  for (var i = 0; i < count; ++i)
+      regexp += ")";
+
+  var manyHellosArray = [];
+  for (var i = 0; i <= count; ++i)
+      manyHellosArray.add("hello");
+
+  var manyBracketsRegExp = new RegExp(regexp);
+  shouldBe(firstMatch('hello', manyBracketsRegExp), manyHellosArray);
+}