This is used as a kickstart %post interpreter to streamline
modifications to images.
Also adds an example kickstart.
This obsoletes the old appliance-tools-minimizer and includes a Provide
so that the transition will be seamless.
Added support for Mako templates.
Changed the Lorax class to require an yumbase object as a parameter.
Changed a lot of unnecessary system calls to native python code.
Moved most of the file paths into a separate object.
The output and config objects are now singletons.
Also done a lot of code cleanup.
The lorax driver program will instantiate the Lorax class, which
drives the creation of the install images. The InstRoot class is
the main object that represents the contents of the instroot
image (the tree that boot and stage2 images are made from).
