ninja windows: support precompiled headers

test/msvs/precompiled/gyptest-all.py

Index: test/msvs/precompiled/gyptest-all.py
diff --git a/test/msvs/precompiled/gyptest-all.py b/test/msvs/precompiled/gyptest-all.py
deleted file mode 100755
index 327ca6d6e106f6fe51b3cd432325a397b9a52f99..0000000000000000000000000000000000000000
--- a/test/msvs/precompiled/gyptest-all.py
+++ /dev/null
@@ -1,23 +0,0 @@
-#!/usr/bin/env python
-
-# Copyright (c) 2011 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.
-
-"""
-Verifies that precompiled headers can be specified.
-"""
-
-import TestGyp
-
-test = TestGyp.TestGyp(formats=['msvs'], workdir='workarea_all')
-
-test.run_gyp('hello.gyp')
-
-test.build('hello.gyp', 'hello')
-
-test.run_built_executable('hello', stdout="Hello, world!\nHello, two!\n")
-
-test.up_to_date('hello.gyp', test.ALL)
-
-test.pass_test()