test rename overhaul: step 3 _tests.dart => _test.dart

utils/tests/string_encoding/run_tests.dart

-#!/usr/bin/env 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("string_encoding_run_tests");
-#import("dunit.dart");
-#import("unicode_tests.dart", prefix: "u");
-#import("unicode_core_tests.dart", prefix: "uc");
-#import("utf16_tests.dart", prefix: "utf16");
-#import("utf32_tests.dart", prefix: "utf32");
-#import("utf8_tests.dart", prefix: "utf8");
-
-void main() {
-  TestSuite suite = new TestSuite();
-  registerTests(suite);
-  suite.run();
-}
-
-void registerTests(TestSuite suite) {
-  suite.registerTestClass(new u.UnicodeTests());
-  suite.registerTestClass(new uc.UnicodeCoreTests());
-  suite.registerTestClass(new utf16.Utf16Tests());
-  suite.registerTestClass(new utf32.Utf32Tests());
-  suite.registerTestClass(new utf8.Utf8Tests());
-}