Jump visualization feature for objdump.

[Thomas Troeger]

> Hi Thomas,

Hi there!

> OK, so just to be clear, we are interested in having such a feature
> inside objdump and if you are willing to create a patch or two we
> would be very happy to review them.

I have attached the current version of my patches.
It's possible to create the visualization using

objdump -wzd --visualize-jumps --extended-color /bin/bash

There are still some fixmes and I guess the code still needs tweaks. I
tried using the same formatting as the code around it, but I cannot
guarantee that it is consistent, but here you go.

Cheers!
Thomas.
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