Make vboot_reference build in MSVC command line environment.

This is a mostly NOOP change which modifies the source code
to compile cleanly in the MSVC command line build
environment.

A new makefile is introduced (msc/nmakefile) along with a
README.txt in the same directory explaining how to build
the code in the DOS window. As of this submission the build
is running in a 32 bit environment, the intention is to use
the same makefile for 64 bit builds in the future.

Enabling high compilation warnings level allowed to
identify a couple of bugs in the code which are being fixed.

Not all sources are being compiled in the MSVC environment,
only those in firmware/ and most of those in test/
subdirectories. The benchmark calculations require porting
of the timer facilities and are being postponed.

TEST

Built in DOS and linux environments. Ran unit tests in
linux environment.

Review URL: http://codereview.chromium.org/2809037
diff --git a/tests/cgptlib_test.h b/tests/cgptlib_test.h
index 9812e77..5f8b042 100644
--- a/tests/cgptlib_test.h
+++ b/tests/cgptlib_test.h
@@ -6,6 +6,7 @@
 #define VBOOT_REFERENCE_CGPTLIB_TEST_H_
 
 #include <stdio.h>
+#include "sysincludes.h"
 
 enum {
   TEST_FAIL = -1,
@@ -13,14 +14,12 @@
 };
 
 #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 { \