[SDL] Alpha blending bug - fixed?

[Ryan C. Gordon]

> -         : /* nothing */ : "m" (sf->Amask), "m" (sf->Ashift) );
> +         : /* nothing */ : "r" (sf->Amask), "r" ((Uint32) sf->Ashift) );
> 
> Note the "r" constraint.

Ah, okay, I'm an idiot...I saw "m" and thought "r" (and on an iBook 
where I couldn't build x86 code...).

We'll go with Gabriel's patch.

--ryan.