kvm tools: Initial GTK+ 3.0 UI

It's barely usable but it isn't getting any better sitting alone in a
private git branch.

You can start a new VM with the GTK UI like this:

./vm run --gtk

It's ro

kvm tools: Initial GTK+ 3.0 UI

It's barely usable but it isn't getting any better sitting alone in a
private git branch.

You can start a new VM with the GTK UI like this:

./vm run --gtk

It's rough around the edges:

- Red and blue color channels are inverted.
- Some keys do not work.
- Mouse does not work.
- GTK assertion failure pops up on shutdown.

but I'm sure there's someone out there that's just dying to improve the
user experience.

Cc: Asias He <asias.hejun@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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