Updated runtime files.  Remove version checks for Vim older than 6.0.
diff --git a/runtime/syntax/mush.vim b/runtime/syntax/mush.vim
index 0645f33..cf95d2a 100644
--- a/runtime/syntax/mush.vim
+++ b/runtime/syntax/mush.vim
@@ -3,11 +3,8 @@
 " Based on vim Syntax file by: Bek Oberin <gossamer@tertius.net.au>
 " Last Updated: Fri Nov 04 20:28:15 2005
 "
-" 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
 
@@ -185,42 +182,35 @@
 syntax keyword mushAttribute vo vp vq vr vs vt vu vv vw vx vy vz
 
 
-if version >= 508 || !exists("did_mush_syntax_inits")
-  if version < 508
-    let did_mush_syntax_inits = 1
-    command -nargs=+ HiLink hi link <args>
-  else
-    command -nargs=+ HiLink hi def link <args>
-  endif
+command -nargs=+ HiLink hi def link <args>
 
-  " The default methods for highlighting.  Can be overridden later
-  HiLink mushAttribute  Constant
-  HiLink mushCommand    Function
-  HiLink mushNumber     Number
-  HiLink mushSetting    PreProc
-  HiLink mushFunction   Statement
-  HiLink mushVariable   Identifier
-  HiLink mushSpecial    Special
-  HiLink mushTodo       Todo
-  HiLink mushFlag       Special
-  HiLink mushIdentifier Identifier
-  HiLink mushDefine     Macro
-  HiLink mushPreProc    PreProc
-  HiLink mushPreProcGroup PreProc 
-  HiLink mushPreCondit PreCondit
-  HiLink mushIncluded cString
-  HiLink  mushInclude Include
+" The default methods for highlighting.  Can be overridden later
+HiLink mushAttribute  Constant
+HiLink mushCommand    Function
+HiLink mushNumber     Number
+HiLink mushSetting    PreProc
+HiLink mushFunction   Statement
+HiLink mushVariable   Identifier
+HiLink mushSpecial    Special
+HiLink mushTodo       Todo
+HiLink mushFlag       Special
+HiLink mushIdentifier Identifier
+HiLink mushDefine     Macro
+HiLink mushPreProc    PreProc
+HiLink mushPreProcGroup PreProc 
+HiLink mushPreCondit PreCondit
+HiLink mushIncluded cString
+HiLink  mushInclude Include
 
 
 
 " Comments
-  HiLink mushCommentStart mushComment
-  HiLink mushComment    Comment
-  HiLink mushCommentString mushString
+HiLink mushCommentStart mushComment
+HiLink mushComment    Comment
+HiLink mushCommentString mushString
 
 
-  delcommand HiLink
-endif
+delcommand HiLink
 
 let b:current_syntax = "mush"