Those multi-lines are still to be done (it's going to be fun...)
See also 5af4cc85.

This improves readability a lot and prevent us from reinventing the wheel.

Missing some cases that I could not test.
Also ffmpeg/chroma.c is locked, so I can but leave it broken.
Fix is for the remaining modules is obvious and the issue is easy to detect.

* Headers in include must contain the structures and prototypes needed
  by the plugins and should be named vlc_*.
* Headers in include/vlc must contain the structures and prototypes
  needed by external libvlc clients

* Moved and renamed some things in headers. 
   - Removed vlc_cpu.h, vlc_error.h (merged in vlc_common)
   - Removed snapshot.h (merged in vlc_vout.h)
   - Removed vlc_spu.h (merged in vlc_osd.h)
   - Removed intf_eject.h and vlc_interaction.h (merged in vlc_interface)
   - Moved all internal headers to src
   - Merged vlc_video.h and video_output.h and move private things to src
   - Removed vlc/intf.h, vlc/aout.h, vlc/vout.h, vlc/decoder.h and vlc/input.h
     (meta headers for use in modules, and often implying too large 
     dependencies)
* Removed some useless dependencies
* Unexported a bunch of functions and structures used only in src/
  (--> Still some work here)
* Finally made input_thread_t and input_source_t (mostly) private. 
  Added input_GetItem to fetch the input_item of an input_thread
* Cleaned up deprecated entries in vlc_symbols.h and bumped up symbol 
  prefix

This commit has a 99% probability of breaking the build, 0.1% of killing
your cat and 0% of getting you hot chicks.

(da big courmischage)

* modules/audio_filter/converter/s16tofloat32*, modules/audio_filter/format.c: s24l/s24b conversion routines.

* Each module can declare a "human-readable short name" with set_name
* Modules are sorted by category (set_category, set_subcategory).
  Modules configs can be separated by set_section()
* Separated audio-filter and audio-visual
* Separated extraintf and control
* New command and widget : add_module_list() for comma-separated modules
* Vfilters now use "," as separator

still some  printfs in dvbsub.c. Would  need to spend some  time reading
the code to remove them.

 as vlc/vlc.h include them).

* include/input_ext-intf.h, include/vlc_es.h: moved ES categories into vlc_es.h
* modules/codec/lpcm.c: ported to the new decoders api + lpcm packetizer.

* ALL: final improvements to the decoders/packetizers api.
   (There are still a few decoders/packetizers left to be converted but this shouldn't take too long).
* ALL: small improvements to the encoders api.

* ALL: Introduction of a new api for decoders.
   The final aim of this new api is to make it possible to use the decoders from other modules like the transcoder for instance.
   Only a few decoders have been ported to the new api (a52, libmpeg2, dts, vorbis, theora) so the old api is still supported.

   Don't hold your breath, there is still much work to do before we reach this goal.

* modules/codec/a52.c, libmpeg2., dts.c, vorbis.c, theora.c:
   Converted to the new api.
   Merged the a52 and vorbis packetizers in their respective decoders (removes a lot of code duplication).
   New dts and theora packetizers (merged in their respective decoders).

  people who explicitely set mpeg_video in the previous version will end
  up with libmpeg2 in 0.6.0.
* modules/codec/libmpeg2.c: Fixed a potential segfault, especially
  with DVDs.
* modules/codec/lpcm.c: Send two PES packets in one aout buffer, because
  some audio filters (read: coreaudio resampler) don't like too small
  packets (I know, this is ugly).

* modules/audio_filter/resampler/coreaudio.c: Set score to 0

* Moved input_ExtractPES to where it belongs, input_ext-dec.c.

* Changed an error into a warning.

* Support for 7 and 7.1 channel configurations.

* modules/codec/*: reverted my previous patch that explicitly set
i_bytes_per_frame and i_frame_length in each audio decoder.
* src/audio_output/dec.c: proper fix to correctly set i_bytes_per_frame
and i_frame_length.

* modules/codec/*: make sure all audio decoders set
output_format.i_bytes_per_frame and output_format.i_frame_length
properly.

and is replaced by two members : i_physical_channels and i_original_channels.
i_physical_channels describes the channels which are effectively present
in the stream (at the current point of the aout pipeline), whereas
i_original_channels represents the channels we used to constitute the
stream. For instance a mono stream (FRONT_CENTER) may emanate from a
FRONT_LEFT channel of a STEREO stream.

Additionally, this contains hooks to dynamically select the audio device
and the channels configuration. In order to do that, all aout plugins,
and all interface plug-ins need to be adapted. Currently only SDL
(partially OSS) and the rc interface have been adapted, please use them
as a guide. Other aout plug-ins have been temporarily disabled.

IMPORTANT : if you need a working sound output, DO NOT UPDATE YOUR TREE
for several days until we fix that.

* modules/misc/network/ipv4.c: Fixed a long-standing segfault when saving
  preferences and asking for multicast.

* ALL: removed GetPES and NextPES, we now use input_ExtractPES everywhere instead
   of these. The bitstream facility has also been changed to use input_ExtractPES
   and now stores the current PES in its structure.
   Introduced input_FlushPESFifo() and CloseBitstream().

* Fixed detection of VCD support under OS X.2.

new ones.

* Fixed a compile issue in s16tofloat32swab.
* Fixed a typo in demux/mpeg/ts.c.

* First hooks for changing the audio output plug-in and its parameters
  on-the-fly.

  (see my last mail).
* aout: Rewrote our whole lock policy. The output thread now doesn't require
  the mixer_lock, which might avoid delays. We will also be able to change
  the filter pipelines at runtime.