[patch, fortran] PR18428: use libcpp for preprocessing (review of C/C++ and fortran maintainers needed)

[Tobias Burnus]

Daniel Franke wrote:
> Attached update of the Fortran side of the previous patch not only fixes FX' 
> requests, but also adds yet another option, namely -nocpp. Tobias B. asked 
> for this as a possibility to disable preprocessing if it would otherwise be 
> enabled by the respective file extensions.
>
> Btw, the C-side of things still needs reviewing. Condensed patch:
> 	http://gcc.gnu.org/ml/fortran/2008-05/msg00248.html
> 	
> Bootstrapped and regression tested on i686-pc-linux-gnu. Ok for trunk?
>   
OK. Thanks for the patch. Can you also update the news section in the wiki?

Tobias