Changed wheezy backports to use DEBIAN_MIRROR address and added a wheezy conditional to unistall sysvinit differently then jessie
Changed qubeize_image back to use set -e not set -x
Fixed issue with umounting when path ended with double slashes// and changed code that set INSTALLDIR to create proper full path without any trailing slashes
Renamed umount_image to umount_kill as to better shuit its purpose
Moved old NOTES from qubes-builder to here