Adds the required options to provide a vdagent to the guest in both source and target qemu
instances.
This will be the last update of the in spice git tests directory, I've moved those tests
to the repository spice-tests. The longer term goal remains autotest integration, but since
this test (and some minor others for qemu) need a home it is:
http://cgit.freedesktop.org/~alon/spice-tests/
(I'm reluctant to put it under spice/ because of my wish to go to autotest, but still, there
they are. Nothing as permanent as the temporary).
Independent (of external modules, i.e. qemu) tests (server/tests) should remain in tree.
Most helpful change is that it prints help if you do --help.
It can take --image parameter, and --client parameter, defaults to spicy.
Incidentally, spicy switch host seems broken - if you run with --client spicec
(assuming spicec is in the PATH), it works fine, but using the default spicy (or
--client spicy) it fails after a single switch.
