Make vboot_reference build in MSVC command line environment.

tests/cgptlib_test.h

 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef VBOOT_REFERENCE_CGPTLIB_TEST_H_
 #define VBOOT_REFERENCE_CGPTLIB_TEST_H_
 
 #include <stdio.h>
+#include "sysincludes.h"
 
 enum {
   TEST_FAIL = -1,
   TEST_OK = 0,
 };
 
 #define TEST_CASE(func) #func, func
-typedef int (*test_func)(void);
+typedef int (*test_func)();
 
 #define ARRAY_SIZE(array) (sizeof(array) / sizeof(array[0]))
 
-/* ANSI Color coding sequences. */
-#define COL_GREEN "\e[1;32m"
-#define COL_RED "\e[0;31m"
-#define COL_STOP "\e[m"
+/* disable MSVC warning on const logical expression (as in } while(0);) */
+__pragma(warning (disable: 4127))
 
 #define EXPECT(expr) \
   do { \
     if (!(expr)) { \
       printf(COL_RED " fail " COL_STOP "in expression %s in %s() line %d\n",\
              #expr, __FUNCTION__, __LINE__); \
       return TEST_FAIL; \
     } \
   } while (0)
 
 #endif  /* VBOOT_REFERENCE_CGPTLIB_TEST_H_ */