Patch to readelf dwarf2 support

[Nick Clifton]

Hi Jason,

: > Please could you get approval before checking in patches to
: > sourceware.
: 
: OK.  I thought that as the GCC dwarf2 maintainer I wouldn't need
: approval, but in future I'll wait.

I am very sorry.  I was unaware that you had taken on this role, at
least in an official capacity anyway.  I will add you to the binutils
MAINTAINERS list, so that in future you can check in patches like
these without prior approval.

Cheers
	Nick