Updated runtime files. Remove version checks for Vim older than 6.0.

runtime/syntax/fvwm2m4.vim

@@ -5,12 +5,9 @@
 " URI: http://physics.muni.cz/~yeti/download/syntax/fvwmm4.vim
 
 " Setup
-if version >= 600
-  if exists('b:current_syntax')
-    finish
-  endif
-else
-  syntax clear
+" quit when a syntax file was already loaded
+if exists('b:current_syntax')
+  finish
 endif
 
 " Let included files know they are included
@@ -19,19 +16,11 @@ if !exists('main_syntax')
 endif
 
 " Include M4 syntax
-if version >= 600
-  runtime! syntax/m4.vim
-else
-  so <sfile>:p:h/m4.vim
-endif
+runtime! syntax/m4.vim
 unlet b:current_syntax
 
 " Include Fvwm2 syntax (Fvwm1 doesn't have M4 preprocessor)
-if version >= 600
-  runtime! syntax/fvwm.vim
-else
-  so <sfile>:p:h/fvwm.vim
-endif
+runtime! syntax/fvwm.vim
 unlet b:current_syntax
 
 " That's all!