Fix for bz#13658 - using fsincos on x86-64

[Joseph S. Myers]

On Thu, 15 Mar 2012, Andreas Jaeger wrote:

>  #include_next <math_private.h>
> +
> +# include <fpu_control.h>
> +
> +# undef libc_feholdexcept_setround_53bit

The indentation after the "#" here was a relic of the unnecessary 
NEED_53BIT_PRECISION condition in my patch - thus, I think that 
indentation should be removed.  Otherwise, the patch looks good to me; I 
think you should commit it, and I'll look at implementing the missing 
ldbl-96 pieces so the remaining cases can be fixed.

-- 
Joseph S. Myers
joseph@codesourcery.com