* modules/gui/skins/*: compilation fixes for MSVC. Almost working, we just to find a way to have flex.c not include unistd.h on win32 and not compile the wxwindows files when SKINS_BASIC is defined.

 u8,s8,s16 big and little endian should be supported but not all tested.

 * avi: added raw audio support (little endian only).

   basic-skins plugin with GTK2
 * modules/gui/skins/parser/skin.*: small compilation fix, but i don't
   really understand why it is necessary :)

  - added a macosx-float config option
  - changed 'opaqueness' into 'macosx-opaqueness'
* modules/gui/macosx/vout.?
  - let vout respect 'float' on top option.
  - added a toggle function to toggle float on top.
ALL:
  - menuitem and corresponding code for float on top.

  - it is not so powerful as --sout (does not allow for multiple unicasts ie)
  - there is a bug in the transcode settings. not sure what is causing it.

big audio chunk. (Avoid 100000 samples at once :(

    - added a basic-skins plugin, which doesn't make use of wxWindows
      dialogs (currently only works for win32)
    - renamed with-wx-config-path in with-skins-wx-config-path for the
      skins plugin, to avoid problems with the wxwindows plugin

* modules/access/v4l/v4l.c: fixed breakage for devices supporting I420.

* modules/access/ftp.c, modules/access/http.c: slightly changed atoll() replacement.

modules/access/ftp.c:
* fixed a very serious bug in the atoll code. this contained a never ending while loop.
  It showed on systems without atoll() (MacOSX) as an inability to view http
  and ftp streams.

module_Need (when I ask for udp I want udp or an error, but not file
or something else) by adding ",none" when a module name is specified.
 I will clean up that by adding a flag to module_Need or something like
that.

   circular anchoring

resampling with some files while keeping good synchronisation.
 Anybody has an idea of the maximum desynchronisation between audio and
video that still be imperceptible ?

  - When we delete an item, update playlist with to indicate 'currently playing'

* modules/audio_output/directx.c: fixed the "no sound on NT4" problem. The directx audio plugin wasn't freeing its resources properly in case Probe() failed so the waveout plugin couldn't open the audio device afterwards.
* modules/video_output/directx/directx.c: work-around buggy video drivers that create unsupported surfaces without shouting. Hopefully, non overlay YUV surfaces shouldn't be created anymore if not supported.

as the others need to seek).

* modules/gui/skins/*, configure.ac.in: removed the skins plugin depandancy on msimg32.dll. Additionnaly, TransparentBlt() and SetLayeredWindowAttributes() are only used if present on the system. This allows us to run the plugin (without transparency though) on NT4/win95/98 as well.

   missing tags in the XML.

* added a flag GTK2_SKINS

   There is still a lot to do but some things are working.

* src/video_output/vout_pictures.c, include/video_output.h: added a vout_InitPicture() function that initializes a picture_t structure based on the given chroma and sizes.
* modules/encoder/ffmpeg/video.c: misc improvements. Should also be able to handle more input chroma format.
* modules/codec/rawvideo.c: a few fixes.
* modules/access/v4l/v4l.c: misc improvments and cleanup. Should be able to handle more source chroma formats. On the fly video encoding is also working perfectly now.