Bug#574625: liquidsoap: Please enable SDL support

[Petter Reinholdtsen <pere@hungry.com>]

Package: liquidsoap
Version: 0.9.2-1+b1

I just tested liquidsoap to generate a video stream, and ran into this
problem.  The documentation on
<URL: http://savonet.sourceforge.net/doc-0.9.2/video.html > mention a
useful way to preview the stream by using output.stl() to get a local
window with the video.  When I try this simple liquidsoap script, it
fail:

  set("frame.video.channels",1)
  output.sdl(single("1241.ogv"))

The error message "At line 2, char 11: unbound symbol output.sdl."
make me suspect the package is built without SDL support, and a quick
look at the autobuilder log confirm this.

Please add SDL support to liquidsoap, to make it easy to review the
stream locally.

Happy hacking,
-- 
Petter Reinholdtsen