Comment 4 for bug 426282

I'm using this patch for a couple of days now. I've already made 2 modifications to the code.
2 more patches are attached, I've tested and they also work against the current 0.7-series branch.

The first patch avoids storing all the par2 files into the local cache. On my installation, the --archive-dir directory was growing up beyond the gigabyte limit since I applied the par2 patch, which was way too much !