Code review comment for lp:~bcbc/wubi/precise-lp1067833

I've tested the code for 64bit for Kubuntu/Edubuntu/Xubuntu/Mythbuntu to the point that it correctly downloads the metalink. (It was failing on this step before).

(Note that this won't fix Lubuntu 12.04.1 installs - the metalink is correct but the install fails for a different reason: bug 1043607)