patch 8.0.0029
Problem:    Code for MS-Windows is complicated because of the exceptions for
            old systems.
Solution:   Drop support for MS-Windows older than Windows XP. (Ken Takata)
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 09b9019..ac7beb7 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -7611,14 +7611,7 @@
     /*
      * Disallow suspending for "rvim".
      */
-    if (!check_restricted()
-#ifdef WIN3264
-	/*
-	 * Check if external commands are allowed now.
-	 */
-	&& can_end_termcap_mode(TRUE)
-#endif
-					)
+    if (!check_restricted())
     {
 	if (!eap->forceit)
 	    autowrite_all();