ninja windows: support and test for AdditionalIncludeDirectories

test/win/gyptest-cl-additional-include-dirs.py

+#!/usr/bin/env python
+
+# Copyright (c) 2012 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.
+
+"""
+Make sure additional include dirs are extracted properly.
+"""
+
+import TestGyp
+
+import sys
+
+if sys.platform == 'win32':
+  test = TestGyp.TestGyp(formats=['msvs', 'ninja'])
+
+  CHDIR = 'compiler-flags'
+  test.run_gyp('additional-include-dirs.gyp', chdir=CHDIR)
+  test.build('additional-include-dirs.gyp', test.ALL, chdir=CHDIR)
+
+  test.pass_test()