* Need cron.daily/weekly/monthly 0 and 99 scripts that mount and unmount
  the disk (optionally, where needed). (is this needed...? this can kill 
  flash memories...)
* make the apt-get config files work (this will make the apt-get command 
  work also in RO mode)  
* Currently flashybrid only works with a single filesystem (on "/"). Fix it to
  work with multiple fs (fh-sync should already be ready) 
