Make vboot_reference build in MSVC command line environment.

tests/test_common.c

 /* 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.
  *
  * Common functions used by tests.
  */
 
 #include "test_common.h"
 
 #include <stdio.h>
 
 #include "cryptolib.h"
 #include "file_keys.h"
 #include "utility.h"
 
-/* ANSI Color coding sequences. */
-#define COL_GREEN "\e[1;32m"
-#define COL_RED "\e[0;31m"
-#define COL_STOP "\e[m"
-
 /* Global test success flag. */
 int gTestSuccess = 1;
 
 int TEST_EQ(int result, int expected_result, char* testname) {
   if (result == expected_result) {
     fprintf(stderr, "%s Test " COL_GREEN "PASSED\n" COL_STOP, testname);
     return 1;
   }
   else {
     fprintf(stderr, "%s Test " COL_RED "FAILED\n" COL_STOP, testname);
     gTestSuccess = 0;
     return 0;
   }
 }
 
 int TEST_NEQ(int result, int not_expected_result, char* testname) {
   if (result != not_expected_result) {
     fprintf(stderr, "%s Test " COL_GREEN "PASSED\n" COL_STOP, testname);
     return 1;
   }
   else {
     fprintf(stderr, "%s Test " COL_RED "FAILED\n" COL_STOP, testname);
     gTestSuccess = 0;
     return 0;
   }
 }