patch 8.0.0059

Problem:    Vim does not build on VMS systems.
Solution:   Various changes for VMS. (Zoltan Arpadffy)

src/os_vms.c

@@ -726,7 +726,8 @@ struct typeahead_st {
 RealWaitForChar(
     int		fd UNUSED, /* always read from iochan */
     long	msec,
-    int		*check_for_gpm UNUSED)
+    int		*check_for_gpm UNUSED,
+    int		*interrupted)
 {
     int status;
     struct _generic_64 time_curr;