Avoid Windows 8 Getversion deprecated errors.

Windows 8 SDKs complain that GetVersion() is deprecated.

We only use GetVersion like this:

	(GetVersion() < 0x80000000)

which checks if the Windows version is NT based. Use a macro check_winnt()
which uses GetVersion() on older SDK versions and true otherwise.
(cherry picked from commit a4cc3c8041)

Conflicts:
	apps/apps.c
	crypto/bio/bss_log.c

Backported by Matt Caswell <matt@openssl.org>
Reviewed-by: Tim Hudson <tjh@openss.org>

crypto/cryptlib.c

@@ -512,7 +512,7 @@ void OPENSSL_showfatal (const char *fmta,...)
 
 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
     /* this -------------v--- guards NT-specific calls */
-    if (GetVersion() < 0x80000000 && OPENSSL_isservice() > 0)
+    if (check_winnt() && OPENSSL_isservice() > 0)
     {	HANDLE h = RegisterEventSource(0,_T("OPENSSL"));
 	const TCHAR *pmsg=buf;
 	ReportEvent(h,EVENTLOG_ERROR_TYPE,0,0,0,1,0,&pmsg,0);

crypto/rand/rand_win.c

@@ -750,7 +750,7 @@ static void readscreen(void)
   int		y;		/* y-coordinate of screen lines to grab */
   int		n = 16;		/* number of screen lines to grab at a time */
 
-  if (GetVersion() < 0x80000000 && OPENSSL_isservice()>0)
+  if (check_winnt() && OPENSSL_isservice()>0)
     return;
 
   /* Create a screen DC and a memory DC compatible to screen DC */

e_os.h

@@ -360,6 +360,13 @@ static __inline unsigned int _strlen31(const char *str)
 #    define DEFAULT_HOME  "C:"
 #  endif
 
+/* Avoid Windows 8 SDK GetVersion deprecated problems */
+#if defined(_MSC_VER) && _MSC_VER>=1800
+#  define check_winnt() (1)
+#else
+#  define check_winnt() (GetVersion() < 0x80000000)
+#endif 
+
 #else /* The non-microsoft world */
 
 #  ifdef OPENSSL_SYS_VMS