Another libgfortran warning round

[Kaveh R. Ghazi]

 > I've added the following warning flags for the C programs in
 > libgfortran:
 > 
 >   -Wmissing-prototypes -Wold-style-definition -Wextra
 > 

Thanks for doing this, it's great!

(Please consider also adding -Wwrite-strings.)

		Thanks,
		--Kaveh
--
Kaveh R. Ghazi			ghazi@caip.rutgers.edu