[PATCH Fortran/Diagnostics] Move Fortran to common diagnostics machinery

[Dodji Seketeli]

Hello Manuel,

Manuel López-Ibáñez <lopezibanez@gmail.com> writes:

> 2014-08-03  Manuel López-Ibáñez  <manu@gcc.gnu.org>
>
>     PR fortran/44054
> c-family/
>     * c-format.c: Handle Fortran flags.
>     * diagnostic.c (build_message_string): Make it extern.
>     * diagnostic.h (build_message_string): Make it extern.

Small nit; the diagnostic.[ch] files are in gcc/, not in c-family.

The language-agnostic diagnostic infrastructure changes otherwise look
OK to me.

Thanks.

-- 
		Dodji