allow 0 for e_shnum, e_shstrndx, e_shoff

[Alan Modra]

On Thu, Sep 20, 2001 at 09:26:33AM -0700, John Reiser wrote:
> 2001-09-20  John Reiser  <jreiser@BitWagon.com>
> 	* bfd/elfcode.h: allow for no Shdr at all in non-ET_REL:
> 	  honor 0 for e_shnum, e_shstrndx, e_shoff

I've applied this patch, fixing the ChangeLog entry and formatting errors.
Please comply with http://www.gnu.org/prep/standards_toc.html next time.

Alan