2011/05/18 - v0.5

	* add support for freebsd, cygwin, and osx
	* explains why sanity check has failed
	* print version number in -help
	* pack-initrd -f support

2011/02/17 - v0.4

	* fix when page_size is null

2010/12/08 - v0.3

	* fix when updating kernel without ramdisk

2010/11/28 - v0.2

	* fix when updating ramdisk without the kernel
	* fix --create on block device
	* added pack-initrd and unpack-initrd helper tools

2010/11/25 - v0.1

	Initial release