Fullscreen patch for rc-interface that allows to force fullscreen on or off state. Original patch is from Greg Farell (Greg _AT#_ gregFarrell _DoT_ org) and modified by me.

* If codec_type != video | audio, then don't use the ffmpeg demux. (it was crashing on .gif pictures).

  basic options

 * modules/gui/wxwidgets/messages.cpp: set the insertion point only before inserting text (patch by zcot)

 - Missing value lists
 - advanced / non-advanced problems
 - description problems
 - tyops

plugin.cpp: auto-detect debbuger and change threading mechanism to avoid VLC intialization lock when launching a debug session
plugin.h: validate container code page before using it
utils.cpp,utils.h: type clean-up
connectioncontainer.cpp: fixed stack corruption (???)  when poping and dispatch an event

* reenable the threads prio option. Not broken, but creates annoying error messages. will look into that later.

  - more precise message for the "force-dolby-surround" option
  - don't use -1 as a value in an integer list option (dangerous casts
    in the wxWidgets interface)
+ modules/audio_filter/converter/a52tofloat32.c:
  - option to disable the internal upmixing algorithm
+ modules/audio_filter/channel_mixer/headphone.c:
  - option to partially compensate the delay introduced by the algorithm
  - option to accept raw Dolby Surround encoded streams

   now indicates the most likely causes of the problem.

 stream_out modules, warn that url is deprecated (but it is still supported),
 add wav mux autodetection.

 * pes: memset header before using bits_* in DEBUG mode (to please valgrind)
 * bits: cosmetics.
 

- thanks to Vincent van den Heuvel <heuvel@mac.com> for the artwork
- screenshots are available at www.aenneburghardt.de/fk/vlc/about1.jpg and *2.jpg
- feel free to revert or modify this commit if you don't like it this way

   (It is done the ugly way : decoding take place at the demuxer but it works)

 frame).