simple Windows compile fixes.

include/config-win.h:
  use the ll and ull postfix codes for create longlong and ulonglong
  symbols.  This allows ULL(a) and LL(a) to be used in more complex
  macro definitions than the previous definitions.  This may work on
  other compilers but we just tested on Visual 7.1 and 8.0
  
  Also, define HAVE_STRNLEN for all windows platforms.  Our own strnlen
  offers no performance improvements over the CRT version.

include/config-win.h

@@ -108,11 +108,17 @@ functions */
 #undef _REENTRANT			/* Crashes something for win32 */
 #undef SAFE_MUTEX			/* Can't be used on windows */
 
-#define LONGLONG_MIN	((__int64) 0x8000000000000000)
-#define LONGLONG_MAX	((__int64) 0x7FFFFFFFFFFFFFFF)
-#define ULONGLONG_MAX	((unsigned __int64) 0xFFFFFFFFFFFFFFFF)
-#define LL(A)		((__int64) A)
-#define ULL(A)		((unsigned __int64) A)
+#if defined(_MSC_VER) && _MSC_VER >= 1310
+#define LL(A)           A##ll
+#define ULL(A)          A##ull
+#else
+#define LL(A)           ((__int64) A)
+#define ULL(A)          ((unsigned __int64) A)
+#endif
+
+#define LONGLONG_MIN	LL(0x8000000000000000)
+#define LONGLONG_MAX	LL(0x7FFFFFFFFFFFFFFF)
+#define ULONGLONG_MAX	ULL(0xFFFFFFFFFFFFFFFF)
 
 /* Type information */
 
@@ -333,11 +339,7 @@ inline double ulonglong2double(ulonglong value)
 #define SPRINTF_RETURNS_INT
 #define HAVE_SETFILEPOINTER
 #define HAVE_VIO_READ_BUFF
-
-#if defined(_WIN64) && defined(_M_X64)
-/* Avoid type conflicts with built-in functions. */
 #define HAVE_STRNLEN
-#endif
 
 #ifndef __NT__
 #undef FILE_SHARE_DELETE