audio cd right now. todo: add more devices, use callbacks for device
insertions/removal

  problem is writing to freed memory???
  possibly related to dropped buffers?

(failed to release allocated data in some error cases)

* Autodelete items played by the SDP demuxer
* Added playlist_CopyParents facility, for modules that use ItemToNode

* src/video_output/vout_subpictures.c: added a b_fade parameter for enabling fading when rendering subpictures

- Easier TLS module wrapper.