Tweak region overflow check

[Nick Clifton]

Hi Nathan,

> 2008-04-23  Nathan Sidwell  <nathan@codesourcery.com>
> 
> 	* ldlang.c (lang_size_sections_1): Don't check LMA overflow on
> 	non-load sections.
> 
> 	* ld-scripts/rgn-over.exp: Allow -ok file names to pass.
> 	* ld-scripts/rgn-over8.s: New.
> 	* ld-scripts/rgn-over8.t: New.
> 	* ld-scripts/rgn-over8-ok.d: New.

Approved - please apply.

Cheers
   Nick