[Committed] Fix some ppc-darwin libobjc objc_sizeof_type bugs

[Mike Stump]

On Dec 11, 2005, at 9:45 PM, Andrew Pinski wrote:
> This patch fixes most of the remaining issues with objc_sizeof_type  
> on powerpc-darwin
> and powerpc-aix.

Odd, I didn't see a patch in that email?