[MLton] IncludeSVN

[Vesa Karvonen]

Quoting Matthew Fluet <fluet at cs.cornell.edu>:
[...]
> The various SVN related WikiMacros are now hardwired only to the root of 
> the mlton.org svn repository.
> 
> Also fulfilled Vesa's feature request.  See http://mlton.org/WikiMacros.

Thanks!  I refactored the http://mlton.org/ReturnStatement page to use
the new feature.  I plan to use it on several other pages in the near
future.

-Vesa Karvonen