patch 7.4.2030
Problem:    ARCH must be set properly when using MinGW.
Solution:   Detect the default value of ARCH from the current compiler. (Ken
            Takata)
diff --git a/src/version.c b/src/version.c
index 301b406..1765e93 100644
--- a/src/version.c
+++ b/src/version.c
@@ -759,6 +759,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2030,
+/**/
     2029,
 /**/
     2028,