Version 0.65
- virtnbdmap: open target device with O_DIRECT during replay of incremental
data to speedup the process: no need to sync then. - virtnbdmap: remove nbdkit logfile after exiting successfully
- virtnbdmap: use pidfile and send signal to correct process. (#46)
- virtnbdmap: check if the passed device starts with /dev/nbd
- virtnbdmap: code cleanup