patch 7.4.1146

Problem:    Can't build with Python 3 interface using MingW.
Solution:   Update the Makefile. (Yasuhiro Matsumoto, Ken Takata)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1146,
 /**/
     1145,
 /**/