Virtual machine addition states enumeration, may be combined with bitwise

enum _VIRTUAL_MACHINE_ADDITION_STATE {
  VMAS_NOSTATE = 1<<0,
  VMAS_BACKUPING = 1<<1,
  VMAS_RESTORING_FROM_BACKUP = 1<<2,
  VMAS_CLONING = 1<<5,
  VMAS_MOVING = 1<<6,
  VMAS_MAX = 1<<31
};