Another buggy complex workaround

[Benjamin Kosnik]

> | I know that complex support is weak in gcc at the moment. I've brought 
> | this up at various times with various people--nobody seems to really want 
> | it fixed. . .
> 
> :-(

kay. Check it in if you think it's ok. . . please add this as a testcase! 
>From what I understand complex number support is completely broken on 
alpha/sparc64 and other 64 bit targets (ie v3 will not build).

Also, can somebody cc complex number issues to gcc-bugs? Thanks

benjamin