[PATCH][Ada][4.3 only] Fix Ada support on alpha

[Arnaud Charlet]

> Is Aurelien patch OK for 4.3 branch?
> 
> ???http://gcc.gnu.org/ml/gcc-patches/2008-04/msg00033.html
> 
> Without this patch, 4.3 Ada doesn't build on alpha-linux, with the patch
> it builds and runs ACATS with only 13 FAIL :

Yes, patch is OK for 4.3 branch.

> > Actually, the s-osinte-linux-alpha.ads and s-osinte-linux-hppa.ads
> > files will be removed in a few days by a change I'm preparing, because they
> > cause too much maintenance troubles and are not maintained properly (and
> > contain lots of duplicates), so your patch will become obsolete
> > at this point (and support for linux-alpha should be back), stay tuned.

I've done this clean up BTW (see s-osinte-linux.ads and s-linux-alpha.ads),
so the patch is indeed OBE on trunk.

Arno