upgpkg: youtube-dl 2013.12.20-1

Upstream update

git-svn-id: file:///srv/repos/svn-community/svn@102809 9fca08f4-af9d-4005-b8df-a31f2cc04f65
archrelease: copy trunk to community-any

git-svn-id: file:///srv/repos/svn-community/svn@102810 9fca08f4-af9d-4005-b8df-a31f2cc04f65