Updated runtime files.  Remove version checks for Vim older than 6.0.
diff --git a/runtime/syntax/netrw.vim b/runtime/syntax/netrw.vim
index 718cee1..3d3aa99 100644
--- a/runtime/syntax/netrw.vim
+++ b/runtime/syntax/netrw.vim
@@ -5,9 +5,8 @@
 " ---------------------------------------------------------------------
 
 " Syntax Clearing: {{{1
-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