SIMH: Fix sim_printf_fmts.h for Visual Stduio 2013 and older

Updated with bscottm's suggested fixes to keep ANSI syntax for VS 2015
and later.

Author: cmgauger

sim_printf_fmts.h

@@ -32,24 +32,26 @@
  * POINTER_FMT: Format modifier for pointers, e.g. "%08" POINTER_FMT "X"
 */
 
-#if defined (_WIN32) || defined(_WIN64)
-
-     /* 64-bit Visual Studio or MINGW build */
-#  if defined(_WIN64) || defined(__MINGW64__)
-#    define LL_FMT     "I64"
-#    define SIZE_T_FMT "I64"
-     /* 32-bit Visual Studio or MINGW build */
-#  elif defined(_WIN32) || defined(__MINGW32__)
-#    define LL_FMT     "ll"
-#    define SIZE_T_FMT "I32"
-#  else
-     /* Graceful fail -- shouldn't ever default to this on a Windows platform. */
-#    define LL_FMT     "ll"
-#    define SIZE_T_FMT "I32"
+#if defined(_MSC_VER) || defined(__MINGW32__) || defined(__MINGW64__)
+#  if _MSC_VER >= 1900 || defined(__USE_MINGW_ANSI_STDIO)
+/* VS 2015 or later, MinGW with ANSI stdio: Use the standard. Don't assume that
+ * MS or MinGW will support the "I" qualifier indefinitely. */
+#    define SIZE_T_FMT   "z"
+#    define T_UINT64_FMT "j"
+#    define T_INT64_FMT  "j"
+#  elif (_MSC_VER < 1900 && defined(_WIN64)) || defined(__MINGW64__)
+/* VS 2013 and earlier, 64-bit: use Microsoft's "I" qualifier. */
+#    define SIZE_T_FMT   "I64"
+#    define T_UINT64_FMT "I64"
+#    define T_INT64_FMT  "I64"
+#  elif (_MSC_VER < 1900 && defined(_WIN32)) || defined(__MINGW32__)
+/* VS 2013 and earlier, 32-bit: use Microsoft's "I" qualifier. */
+#    define SIZE_T_FMT   "I32"
+#    define T_UINT64_FMT "I64"
+#    define T_INT64_FMT  "I64"
 #  endif
 
-#  define T_UINT64_FMT   "I64"
-#  define T_INT64_FMT    "I64"
+#  define LL_FMT         "ll"
 #  define POINTER_FMT    "p"
 
 #elif defined(__GNU_LIBRARY__) || defined(__GLIBC__) || defined(__GLIBC_MINOR__) || \