Make opts-common.c handle unknown options using SWITCH_TAKES_ARG etc.

[Tobias Burnus]

On 06/23/2010 10:26 PM, Joseph S. Myers wrote:
> Bootstrapped with no regressions on x86_64-unknown-linux-gnu.  OK to
> commit?
>   

I regard the Fortran changes as trivial/obvious. But for completeness:
The Fortran part is OK.

Tobias
> fortran:
> 2010-06-23  Joseph Myers  <joseph@codesourcery.com>
>
> 	* gfortranspec.c (SWITCH_TAKES_ARG, WORD_SWITCH_TAKES_ARG):
> 	Remove