fix bug with loadaddr and load regions

[Alan Modra]

On Fri, Aug 25, 2006 at 11:52:18AM +0100, Nathan Sidwell wrote:
> I fell over a problem with using a load region and loadaddr, to create a 
> romable image.  With
> 	.data { data_load = LOADADDR(.data); ... } >ram AT>rom
> I found that data_load's value became load address + execution address, 
> because it was interpreted as a data-relative value.  The same problem 
> didn't manifest with
> 	.data : AT(EXPR) { data_load = LOADADDR(.data); ...} >ram
> but of course here I have to calculate EXPR myself.

I think this has been fixed by my 2006-08-23 fold_name change.
I committed your new testcases.

-- 
Alan Modra
IBM OzLabs - Linux Technology Centre