Update runtime files.

runtime/syntax/dcl.vim

@@ -1,8 +1,8 @@
 " Vim syntax file
 " Language:	DCL (Digital Command Language - vms)
 " Maintainer:	Charles E. Campbell <NdrOchipS@PcampbellAfamily.Mbiz>
-" Last Change:	Aug 31, 2016
-" Version:	11
+" Last Change:	Mar 26, 2019
+" Version:	12
 " URL:	http://www.drchip.org/astronaut/vim/index.html#SYNTAX_DCL
 
 " quit when a syntax file was already loaded
@@ -10,10 +10,10 @@ if exists("b:current_syntax")
   finish
 endif
 
-if !has("patch-7.4.1142")
-  setlocal iskeyword=$,@,48-57,_
-else
+if (v:version == 704 && has("patch-7.4.1142")) || v:version > 704
  syn iskeyword $,@,48-57,_
+else
+ setlocal iskeyword=$,@,48-57,_
 endif
 
 syn case ignore