Correct file names for tests in tests/language.

tests/language/inline_add_constants_to_initial_env.dart

Index: tests/language/inline_add_constants_to_initial_env.dart
===================================================================
--- tests/language/inline_add_constants_to_initial_env.dart	(revision 15191)
+++ tests/language/inline_add_constants_to_initial_env.dart	(working copy)
@@ -1,15 +0,0 @@
-// 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.
-// Test that SSA values are correctly numbered after inlining that adds
-// constants to original environment.
-
-h(x, y) => x == y;
-
-g(y, [x0 = 0, x1 = 1, x2 = 2, x3 = 3]) => y + x0 + x1 + x2 + x3;
-
-f(y) => h(y, g(y));
-
-main() {
-  for (var i = 0; i < 1000; i++) f(i);
-}