Large number of changes, probably too numerous to list individually but a few highlights are:

1) Incorporated python rtslib into the build to support iSCSI presentation of storage drive
2) Added additional packages to both host and target pythons to support rtslib
3) Refactoring of scripts to support a number of additional features including
	a) a config file
	b) a cleaner separation of the io functionality into an abstracted io layer
	c) implementation of various config options throughout the code
4) Refactoring of start.sh so that it works from wherever it is invoked and also to support the
installation of the additional python packages into the buildroot tree
5) Some changes to the configs to support the above building