py/mpprint: Fix printing of 64bit integers for 64bit windows builds

This makes all tests pass again for 64bit windows builds which would
previously fail for anything printing ranges (builtin_range/unpack1)
because they were printed as range( ld, ld ).

This is done by reusing the mp_vprintf implementation for MICROPY_OBJ_REPR_D
for 64bit windows builds (both msvc and mingw-w64) since the format specifier
used for 64bit integers is also %lld, or %llu for the unsigned version.

Note these specifiers used to be fetched from inttypes.h, which is the
C99 way of working with printf/scanf in a portable way, but mingw-w64
wants to be backwards compatible with older MS C runtimes and uses
the non-portable %I64i instead of %lld in inttypes.h, so remove the use
of said header again in mpconfig.h and define the specifiers manually.

py/mpconfig.h

@@ -909,9 +909,8 @@ typedef double mp_float_t;
 #define UINT_FMT "%lu"
 #define INT_FMT "%ld"
 #elif defined(_WIN64)
-#include <inttypes.h>
-#define UINT_FMT "%"PRIu64
-#define INT_FMT "%"PRId64
+#define UINT_FMT "%llu"
+#define INT_FMT "%lld"
 #else
 // Archs where mp_int_t == int
 #define UINT_FMT "%u"

py/mpprint.c

@@ -529,7 +529,7 @@ int mp_vprintf(const mp_print_t *print, const char *fmt, va_list args) {
             // Because 'l' is eaten above, another 'l' means %ll.  We need to support
             // this length specifier for OBJ_REPR_D (64-bit NaN boxing).
             // TODO Either enable this unconditionally, or provide a specific config var.
-            #if MICROPY_OBJ_REPR == MICROPY_OBJ_REPR_D
+            #if (MICROPY_OBJ_REPR == MICROPY_OBJ_REPR_D) || defined(_WIN64)
             case 'l': {
                 unsigned long long int arg_value = va_arg(args, unsigned long long int);
                 ++fmt;