[ESS] ESS sas-mode: change comment style

[Will]

Hi,

I'd like to change the sas comment style from
** ***************** **;
** This is a comment **;
** ***************** **;
to
/* ***************** */
/* This is a comment */
/* ***************** */

How do I do that? What variables do I have to configure? What hooks 
should i use?

A Note to ESS developers:
As SAS does not treat comments like "** **;" as comments in all 
situations (e.g. in macros, on same line as commands), I prefer "/* */".
I suggest a flexible, easy way to change between those comment styles as 
both have their advantages and drawbacks.(cf. 
http://support.sas.com/onlinedoc/913/getDoc/sv/lrdict.hlp/a000289375.htm#a000852196)

Best, Will