phaul: Rename p_haul_criu -> criu_api

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
phaul: Rename p_haul_img -> images

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
phaul: Rename p_haul_netapi -> util

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
phaul: Move p_haul_fsapi -> util

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
phaul: Move p_haul_netifapi -> util

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>