Compatibility code for `filter-buffer-substring-functions'?

[Bastien]

Hi all,

While compiling the latest version of Org-mode with Emacs 24.0.94.1
I get this warning:

,----
| In org-indent-mode:
| org-indent.el:212:11:Warning: `buffer-substring-filters' is an obsolete
|     variable (as of 24.1); use `filter-buffer-substring-functions' instead.
`----

Okay.  But replacing `buffer-substring-filters' by
`filter-buffer-substring-functions' is not trivial.

Before I spend time on this, I wonder if anyone has had to do this 
work.  If so, any code/advice to share?

Thanks in advance!

-- 
 Bastien