Use the modern MinGW major version macro, not the deprecated one.

FossilOrigin-Name: 057c16ee9786efcad6372a29b02d743ff3d628ff
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 41e7e2d..0276d37 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -75,7 +75,7 @@
 */
 #if !defined(_USE_32BIT_TIME_T) && !defined(_USE_64BIT_TIME_T) && \
     defined(_WIN32) && !defined(_WIN64) && \
-    defined(__MINGW32_MAJOR_VERSION) && __MINGW32_MAJOR_VERSION >= 4 && \
+    defined(__MINGW_MAJOR_VERSION) && __MINGW_MAJOR_VERSION >= 4 && \
     defined(__MSVCRT__)
 # define _USE_32BIT_TIME_T
 #endif