Prepare to add support for specifying a custom stage3 archive (variable, option)
Refactor the copying (sigh) phase
/var cache will not be used when we have a tarball
Will not try fetching when we have a tarball
Update README
Move all blocks asking for download related information together
Only ask download related questions when a tarball is not present
Match other code with regard to quoting conditional expressions
Merge pull request #49 from specing/custom_rootfs

Custom rootfs support