Comment 9 for bug 420931

I've put together a backport for an SRU; attached is the debdiff for hardy. I've also built test packages based off of the backported patch for testing in my zsync ppa at https://launchpad.net/~sbeattie/+archive/zsync/. I wasn't sure the rest of the zsync 0.5 codebase was 64bit clean, but based on local testing, zsync 0.5 + the backported patch successfully downloads full dvd images where the released version would segv, and continues to download smaller sized files.