Updated runtime files.  Remove version checks for Vim older than 6.0.
diff --git a/runtime/syntax/master.vim b/runtime/syntax/master.vim
index 40d644e..14440ee 100644
--- a/runtime/syntax/master.vim
+++ b/runtime/syntax/master.vim
@@ -8,11 +8,8 @@
 " this is a very simple syntax file - I will be improving it
 " add entire DEFINE syntax
 
-" For version 5.x: Clear all syntax items
-" For version 6.x: Quit when a syntax file was already loaded
-if version < 600
-  syntax clear
-elseif exists("b:current_syntax")
+" quit when a syntax file was already loaded
+if exists("b:current_syntax")
   finish
 endif
 
@@ -28,22 +25,14 @@
 syn match   masterComment	"\$.*"
 
 " Define the default highlighting.
-" For version 5.7 and earlier: only when not done already
-" For version 5.8 and later: only when an item doesn't have highlighting yet
-if version >= 508 || !exists("did_master_syntax_inits")
-  if version < 508
-    let did_master_syntax_inits = 1
-    command -nargs=+ HiLink hi link <args>
-  else
-    command -nargs=+ HiLink hi def link <args>
-  endif
+" Only when an item doesn't have highlighting yet
+command -nargs=+ HiLink hi def link <args>
 
-  HiLink masterKeyword Keyword
-  HiLink masterComment Comment
-  HiLink masterString  String
+HiLink masterKeyword Keyword
+HiLink masterComment Comment
+HiLink masterString  String
 
-  delcommand HiLink
-endif
+delcommand HiLink
 
 let b:current_syntax = "master"