I totally agree with the person searching for the sources, but unfotunately there is no pointer where to _get_ them but only an astaro person stating:
As for the sources, we are compiling a CD with all the packages included in ASL. It will include much of ftp.gnu.org and other publicly accessible FTP servers, so I really don't know what the point is about that source thing.
I'm not that interested in stuff i can get from gnu.org but i'm sure they included lots of patches.