RFA: some minor dwarf-mode.el changes

[nick clifton]

Hi Tom,

> 2013-03-27  Tom Tromey  <tromey@redhat.com>
>
> 	* dwarf-mode.el: Bump version number.
> 	(dwarf-mode): Remove autoload.
> 	(dwarf-die-reference): Relax regexp.

Approved - please apply.

Cheers
   Nick