[patch] Add -static-libgfortran to gcc.c and Fortran driver

[FX Coudert]

*ping*

> This change in the option name requires a one-line addition to gcc.c,
> in order to validate this option that has a name that doesn't start
> with -f. I don't know who exactly can approve this change, I think it
> qualifies as "driver".
>
> Bootstrapped, regtested and manually tested on i686-linux. OK for
> mainline? (for both the Fortran and gcc.c parts)


> 2007-05-07  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
>
>        * gcc.c (process_command): Recognize the new -static- 
> libgfortran
>        option.
>
>
> 2007-05-07  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
>
>        * lang.opt (static-libgfortran): New option.
>        * gfortranspec.c (ADD_ARG_LIBGFORTRAN): New macro.
>        (Option): Add OPTION_static and OPTION_static_libgfortran.
>        (lookup_option): Handle the new -static-libgfortran option.
>        (lang_specific_driver): Check whether -static is passed.
>        Handle the new -static-libgfortran option.
>        * options.c (gfc_handle_option): If -static-libgfortran is
>        passed and isn't supported on this configuration, error out.