fix fixincludes

[Joseph S. Myers]

On Thu, 3 Sep 2009, Ralf Wildenhues wrote:

>   also, there was one instance where literal + was certainly intended
>   ('extern "C\+\+"' in sco_math), but we may want to run this by
>   somebody with system access to ensure that that is what should happen,

I think we can just remove sco_math.  SCO support was deprecated in 4.3 
and removed in 4.4, but finding all fixes affected by a particular 
deprecation is tricky since they don't all state the affected target 
triplets in a form matched by grep.

-- 
Joseph S. Myers
joseph@codesourcery.com