ninja windows: fix expansion of some VS macros

test/ninja/normalize-paths-win/hello.cc

Index: test/ninja/normalize-paths-win/hello.cc
diff --git a/test/ninja/normalize-paths-win/hello.cc b/test/ninja/normalize-paths-win/hello.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1711567ef566703fcd9c33e0a236b1b30454df6a
--- /dev/null
+++ b/test/ninja/normalize-paths-win/hello.cc
@@ -0,0 +1,7 @@
+// 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.
+
+int main() {
+  return 0;
+}