Make the ninja generator handle symlinked paths correctly.

test/symlinks/hello.gyp

Index: test/symlinks/hello.gyp
diff --git a/test/build-option/hello.gyp b/test/symlinks/hello.gyp
similarity index 62%
copy from test/build-option/hello.gyp
copy to test/symlinks/hello.gyp
index 1974d51ccd1934cfc0841f26e7118448b2fb1c98..81d9f18e09521e57da8e3281b6e241304c0552a4 100644
--- a/test/build-option/hello.gyp
+++ b/test/symlinks/hello.gyp
@@ -1,14 +1,14 @@
-# Copyright (c) 2009 Google Inc. All rights reserved.
+# Copyright (c) 2015 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'targets': [
     {
-      'target_name': 'hello',
+      'target_name': 'symlink_hello',
       'type': 'executable',
       'sources': [
-        'hello.c',
+        'symlink_hello.c',
       ],
     },
   ],