updated for version 7.4.197
Problem:    Various problems on VMS.
Solution:   Fix several VMS problems. (Zoltan Arpadffy)
diff --git a/src/proto/os_vms.pro b/src/proto/os_vms.pro
index 2ed6394..6408455 100644
--- a/src/proto/os_vms.pro
+++ b/src/proto/os_vms.pro
@@ -7,6 +7,7 @@
 int vms_sys __ARGS((char *cmd, char *out, char *inp));
 int vms_sys_status __ARGS((int status));
 int vms_read __ARGS((char *inbuf, size_t nbytes));
+char *vms_tolower __ARGS((char *name));
 int mch_expand_wildcards __ARGS((int num_pat, char_u **pat, int *num_file, char_u ***file, int flags));
 int mch_expandpath __ARGS((garray_T *gap, char_u *path, int flags));
 void *vms_fixfilename __ARGS((void *instring));