qemu_devicedel : convert to qmp

Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
qemu_deviceadd : convert to qmp

Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
qemu_netdevdel : convert to qmp

Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
qemu_netdevadd : convert to qmp

Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
hot-unplug : add some warnings for differents guest os

Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
hotplug/unplug devices by default
bump version to 2.3-10