Updated runtime files.  Remove version checks for Vim older than 6.0.
diff --git a/runtime/syntax/kix.vim b/runtime/syntax/kix.vim
index 62dc325..a86d66c 100644
--- a/runtime/syntax/kix.vim
+++ b/runtime/syntax/kix.vim
@@ -19,10 +19,8 @@
 "	Work out how to error too many "(", i.e. (() should be an error.
 "	Similarly, "if" without "endif" and similar constructs should error.
 
-" Clear legacy syntax rules for version 5.x, exit if already processed for version 6+
-if version < 600
-	syn clear
-elseif exists("b:current_syntax")
+" quit when a syntax file was already loaded
+if exists("b:current_syntax")
 	finish
 endif
 
@@ -130,52 +128,44 @@
 
 
 " Default highlighting.
-" Version < 5.8 set default highlight if file not already processed.
-" Version >= 5.8 set default highlight only if it doesn't already have a value.
-if version > 508 || !exists("did_kix_syn_inits")
-	if version < 508
-		let did_kix_syn_inits=1
-		command -nargs=+ HiLink hi link <args>
-	else
-		command -nargs=+ HiLink hi def link <args>
-	endif
+" Set default highlight only if it doesn't already have a value.
+command -nargs=+ HiLink hi def link <args>
 
-	HiLink kixDoubleString		String
-	HiLink kixSingleString		String
-	HiLink kixStatement		Statement
-	HiLink kixRepeat		Repeat
-	HiLink kixComment		Comment
-	HiLink kixBuiltin		Function
-	HiLink kixLocalVar		Special
-	HiLink kixMacro			Special
-	HiLink kixEnvVar		Special
-	HiLink kixLabel			Type
-	HiLink kixFunction		Function
-	HiLink kixInteger		Number
-	HiLink kixHex			Number
-	HiLink kixFloat			Number
-	HiLink kixOperator		Operator
-	HiLink kixExpression		Operator
+HiLink kixDoubleString		String
+HiLink kixSingleString		String
+HiLink kixStatement		Statement
+HiLink kixRepeat		Repeat
+HiLink kixComment		Comment
+HiLink kixBuiltin		Function
+HiLink kixLocalVar		Special
+HiLink kixMacro			Special
+HiLink kixEnvVar		Special
+HiLink kixLabel			Type
+HiLink kixFunction		Function
+HiLink kixInteger		Number
+HiLink kixHex			Number
+HiLink kixFloat			Number
+HiLink kixOperator		Operator
+HiLink kixExpression		Operator
 
-	HiLink kixParenCloseError	Error
-	HiLink kixBrackCloseError	Error
-	HiLink kixStringError		Error
+HiLink kixParenCloseError	Error
+HiLink kixBrackCloseError	Error
+HiLink kixStringError		Error
 
-	HiLink kixWhileError		Error
-	HiLink kixWhileOK		Conditional
-	HiLink kixDoError		Error
-	HiLink kixDoOK			Conditional
-	HiLink kixIfError		Error
-	HiLink kixIfOK			Conditional
-	HiLink kixSelectError		Error
-	HiLink kixSelectOK		Conditional
-	HiLink kixForNextError		Error
-	HiLink kixForNextOK		Conditional
-	HiLink kixForEachError		Error
-	HiLink kixForEachOK		Conditional
+HiLink kixWhileError		Error
+HiLink kixWhileOK		Conditional
+HiLink kixDoError		Error
+HiLink kixDoOK			Conditional
+HiLink kixIfError		Error
+HiLink kixIfOK			Conditional
+HiLink kixSelectError		Error
+HiLink kixSelectOK		Conditional
+HiLink kixForNextError		Error
+HiLink kixForNextOK		Conditional
+HiLink kixForEachError		Error
+HiLink kixForEachOK		Conditional
 
-	delcommand HiLink
-endif
+delcommand HiLink
 
 let b:current_syntax = "kix"