[Patch testsuite, Objc] Fix PR 25766

[Mike Stump]

On Apr 12, 2010, at 10:47 AM, IainS wrote:
> My reading of the Darwin ABI reference:
> is that > 4 bytes are returned by reference on PPC and > 8 bytes on i686.
> The test does not currently apply to m64.

I've checked in a fix for this to the testsuite.  Let me know if it isn't sufficient to fix the issue.

> 	PR testsuite/25766
> 	* objc.dg/stret-2.m: Make the test structure > 4 bytes on PPC and > 9
> 	bytes on i686.  Require ilp32 target.