Patch by Mark Hammond to support 64-bit ints on MS platforms.
The MS compiler doesn't call it 'long long', it uses __int64,
so a new #define, LONG_LONG, has been added and all occurrences
of 'long long' are replaced with it.
diff --git a/PC/config.h b/PC/config.h
index 0bc8cc5..495b985 100644
--- a/PC/config.h
+++ b/PC/config.h
@@ -85,6 +85,8 @@
#define DL_IMPORT(RTYPE) __declspec(dllexport) RTYPE
#endif
+#define HAVE_LONG_LONG 1
+#define LONG_LONG __int64
#endif /* _MSC_VER && > 850 */
#if defined(_MSC_VER) && _MSC_VER <= 850