simple interface to create and use OpenGL windows
 * modules/video_output/x11/glx.c: the GLX vout now implements the
  "opengl provider" interface
 * modules/visualization/galaktos/*: no more dependency on GLX: we use
   the generic opengl provider interface instead.

  Thanks to James MacLean, Arwed von Merkatz and Ross Finlayson for reporting and fixing the issue.

    the conversion ??)

    TODO: - factorization with xcommon.c
          - factorization with glx.c in GaLaktos plugin
          - remove hard-coded values
    (If you don't like the rotating cube, hack the code yourself,
    the variables will come later ! ;)

This makes the served stream work with cambozola applet.

    + Build-depend on libdvbpsi3-dev, so that we can get rid of the previous
      versions of this library.
    + Recommend the videolan-doc package.
    + Build-conflict on libavcodec-dev, just in case it enters Sid at an
      unappropriate moment.
  * debian/README.Debian:
    + Removed mention of the libmpeg2 tree, which we no longer provide.

* modules/demux/ts.c: added support for transport streams with Reed-Solomon (204,188) error correction (16 bytes ECC discarded).

Fallback to IPv4 with option --ipv6 if IPv6 fails

    based on ProjectM (xmms-projectm.sourceforge.net), without the
    dependency on SDL 1.3. At the moment it only works on X11 with GLX 1.3,
    I didn't manage to have it working with the 1.2 API :(
    SGI Pbuffers are not used yet, I didn't manage to have them working
    well either :(
    Milkdrop presets are searched in /etc/projectM/presets (guess why ;)
    With projectM presets, colours look a bit "flashy", I wonder if it
    is normal...
    To compile the plugin, add --enable-galaktos in configure. The only
    dependencies are on X11 and OpenGL libs.
    Enjoy !

  added configure.ac check and use strtod with cast as backup since it is ANSI C

 * mp4.c: hdlr atom in the .mp4 and .mov way.

      (Please look at the warnings, most of the time "incompatible pointer
type" isn't really good ;)