[PATCH] [GAS] Remove build warnings for a.out targets

[Nick Clifton]

Hi Gunther,

>   a) keep the offending macro but define it explicitly to 0 and 1
>   b) replace the macro usage with its value where it is used.

I like a).

> 2018-01-12  Gunther Nikl  <gnikl@users.sourceforge.net>
> 
> 	* gas/config/aout_gnu.h (USE_EXTENDED_RELOC): Explicitly
> 	  define to 0 and 1. Remove a dangling reference to "AMD 29000"
> 	  in a comment.

Approved and applied.

Cheers
  Nick