As the current version doesn't work anymore and there has been a lot of progress
since February, I think it's time to switch over to the new versen.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
In addition, we're now switching to using refs/tags from git rather than commit
refs directly, which has the advantage, that we don't have to do bookkeeping
twice, where people forget to increment the version in nixpkgs.
This happened for the previous version, where `pkgver` had the value
"2011.12.08", but in rg3/youtube-dl@661a807c65 the
version actually is "2012.01.08b".
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
