F4VDownloader: Update for large boxes

The spec file actually defines a large box type which wasn't implemented in
the original F4VDownloader, leading it to fail on the new Channel4 F4V
streams.  Fix by adding support for this.  Also update the methods to be non
class, since they don't use any object data.

Signed-off-by: James Bottomley <JBottomley@Parallels.com>
1 file changed