Review of remaining xm-host headers

[Stan Shebs]

"Kaveh R. Ghazi" wrote:
> 
>  > rs6000/xm-darwin.h:
>  >         Forces HAVE_DESIGNATED_INITIALIZERS off, apparently there's a
>  >         system compiler bug.  Wait for bug to be fixed?
> 
> This one should definitely work using:
> xm_defines'HAVE_DESIGNATED_INITIALIZERS=0'

I can do that, good idea.

(Further research shows the real reason to be a longstanding lameness
in the ObjC frontend, see http://gcc.gnu.org/ml/gcc/2000-12/msg00154.html
for details.)

Stan