patch 7.4.1756
Problem:    "dll" options are not expanded.
Solution:   Expand environment variables. (Ozaki Kiichi)
diff --git a/src/version.c b/src/version.c
index 393b75d..6fdc9da 100644
--- a/src/version.c
+++ b/src/version.c
@@ -749,6 +749,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1756,
+/**/
     1755,
 /**/
     1754,