Enable large file support on Win32 systems.
Curious: the MS docs say stati64 etc are supported even on Win95, but
Win95 doesn't support a filesystem that allows partitions > 2 Gb.
test_largefile: This was opening its test file in text mode. I have no
idea how that worked under Win64, but it sure needs binary mode on Win98.
BTW, on Win98 test_largefile runs quickly (under a second).
diff --git a/PC/pyconfig.h b/PC/pyconfig.h
index f287605..370b518 100644
--- a/PC/pyconfig.h
+++ b/PC/pyconfig.h
@@ -313,6 +313,7 @@
# define HAVE_LARGEFILE_SUPPORT
#elif defined(MS_WIN32)
# define PLATFORM "win32"
+# define HAVE_LARGEFILE_SUPPORT
# ifdef _M_ALPHA
# define SIZEOF_VOID_P 8
# define SIZEOF_TIME_T 8