[Icecast] libshout 2.1 released

[Brendan Cully]

In the absence of any negative feedback (or positive, for that
matter), I've decided to just go ahead and drop the new version of
libshout, libshout 2.1.

New features:
* nonblocking I/O: call shout_set_nonblocking(1) before
  shout_open. If the socket is busy, your data will be queued until
  the next time libshout attempts a write. The current queue length
  in bytes is visible through shout_queuelen().
* theora (alpha4) support.

And some bugs were fixed, particularly one that caused the strange
shout_send error SHOUT_SUCCESS.

It should be ABI-compatible with libshout 2.0.

Find it at http://downloads.xiph.org/releases/libshout/
along with updated perl and python bindings (Shout-2.1 and
shout-python 0.2, respectively).

Happy hacking.