New tool: virt-v2v.

This is a rewrite of the original virt-v2v tool.  The original was
written by Matt Booth et al in Perl between 2009 and 2013.
New tool: virt-p2v.

This is a graphical standalone front-end to virt-v2v which can be run
on physical machines (usually linked into a ISO or PXE boot image) to
convert the physical machine to a virtual machine.
Add p2v-iso directory containing scripts for building the virt-p2v ISO.

It is not possible to have the ISO be built automatically when the
user runs 'make'.  The README file describes how you should go about
building the ISO or disk image.