Support the -G flag from the binutils dwarfdump.

[khuey]

No description provided.

[coveralls]

Coverage decreased (-0.006%) to 86.377% when pulling f265e05 on khuey:dwarfdump-goff into 423431f on gimli-rs:master.

[philipc]

I think you mean libdwarf dwarfdump :)

How would you feel about removing the -G flag and always displaying the global offset (and not the unit offset)? This is what all other tools that I looked at do (objdump, readelf, llvm-dwarfdump).

[khuey]

So I'm not thrilled about only showing the global offset, because 99% of my use of dwarfdump is checking the raw DWARF against what I'm getting out of my gimli embedding, and in gimli the UnitOffset is often what's handy. I wouldn't object to reversing the optionality though (showing global offsets all the time with a flag for the unit offsets).

[philipc]

That's fine, let's leave that how you have it then.

[philipc]

Thanks!