[PATCH] Fix amd64 compilation

[Andrew Cagney]

> Apparently Andrew missed the push_dummy_call() in x86-64-tdep.c.

The target wasn't building - missing IS_FP_REGNUM defn in an earlier file.

thanks,
Andrew

> Index: ChangeLog
> from  Mark Kettenis  <kettenis@gnu.org>
>  
> 	* x86-64-tdep.c (x86_64_push_dummy_call): Adjust for changed
> 	function signature.
>