09c: 2009/05/14
	- abort only when failing to mount dst part, instead of
	  aborting at any failed mount attempt.
09b: 2009/05/04
	- enlarge 4th partition to accommodate larger ttylinux
09a: 2009/04/19
	- update ttylinux to version 8.0
	- don't ask for device unnecessarily
	- print error and die if fails to mount
08h: 2008/07/19
	- complete rewrite
08g: 2008/05/18
	- package all files relative to the root directory
	- cloning is now very easy
	- change the meaning of option -s to indicated the source
	  device for cloning; use -z to specify partition sizes
08f: 2008/04/13
	- Package ttylinux into mk-boot-linux so that there is no
	  need to download, mount loop, and so on. Lots of hassles
	  are avoided and network is no longer needed for running
	  mk-boot-usb.
	- Add "-o ro" when mounting usb for displaying partial
	  lists of original files. Hopefully this will remove
	  the occasional bizaar situations that later umount
	  command complains device busy.
08e: 2008/04/11
	- Users are now asked to disable "automatic mounting of
	  removable media".
	- Downloaded ttylinux iso image is now put in /tmp.
	  Systems using unionfs have trouble mounting loop devices
	  located in one of the unionfs branches. In such systems,
	  /tmp is typically mounted as tmpfs and is therefore safe.
08d: 2008/03/22
	- Fix bug for 1-partition situation
	- Add menu for otg-linux
08c: 2008/03/12
	- Retrieve ttylinux from people.ofset.org instead of the
	  official site (because the link became invalid when
	  the official site upgraded ttylinux)
	- Create only 1 partition for small usb sticks
08b: 2008/03/07
	- Also installs "lilo -M" without really invoking lilo
	- Md5sum check for ttylinux as suggested by Georges Khaznadar
08a: 2008/02/25 First released