o use node for tmpnode, if it already exists
  o add DVB variables to kernel, and drop shell script rule
  o DEVTYPE for disks is set by the kernel, they will be removed from
    the default rules
  o "udevadm control" commands will only accept the --<command> syntax
  o symlink names to udevadm will no longer be resolved to old command names
  o fix "udevadm info -V" format
  o get distros to agree on a default set of rules