First serie of changes in DVD module for the forthcoming interface menus
 There is a new capability in input type modules for setting the
attributes of a new area. It is set to NULL for PS and TS plugins.
 It should be called for every title change, chapter change,
audio mode change or spu channel change.

But this part of code is not used at the moment, and is not completed
yet.

related file with 100% reliability (great change that should make DVDs
with binaries and extra stuff work with vlc).

-Correction of a bug in ifo reading that falsified the adress of
video titles.

-Changed the method for selecting title at start. It is _not_ reliable
though, but it is better than the preceding one.

-Beginning of udf support (not in Makefile)

longer such an ugly kludge and is much more accurate.

-Changes in DVDSeek so that the interface slider is in 0 when we are at
the beginning of the strem.

-Try to detect the beginning of the movie in the middle of the title. It
works for most of the DVDs but will begin in the middle of the movie
with some others.

-Calculate only the first title key in css mode because it might take a
long time with some title. The search stops now when we have a key once
whereas it did stop only when we had it twice before. It should not
cause problems.

done on a multiple of 2048, and shopuld take care of the offset to the
beginning of the stream. It works with most of my DVDs by fails to
detect size of some streams.

-change of the order of call to ifo and css functions in input_dvd.c,
because we can't read ifo files before authentification on some DVDs.

-changed location of some css tables.

-we read ifo date and decrypt css keys for all titles now. It takes quite a
long time to initialize with some DVDs (if you have 42 titles for
instance). The key decryption might give a false value if the title is
less than 10 Mb ; I'm working on that :)

Most of DVD with movie in title 1 should work.

To come : support for movie in other titles.

structures of DVDs
-Change in configure to avoid compiling css functions on BSD.

  GNU/Linux options ;
* Changed fseek() to fseeko() for 64-bit offsets ;
* Reset frame predictors on a stream discontinuity.

plugins. I will fix that soon.
-minor modification in pluginification.

   This commit is a bit early, but it'll save Stef, Henri and me much
 time later, when we don't have to backport modifications to input_*.c

   What's new :
    - playlist works again (still the old wrong way like Meuuh doesn't
    like, but this is going to change within a few hours)
    - input_ps, input_ts and input_dvd are now plugins, located in
    plugins/mpeg/ and plugins/dvd/

   What's broken :
    - audio output might be broken on some streams ; have to investigate

   What has changed :
    - fast/slow keys are now A/Z instead of A/S since S was already
    linked to the scale/noscale toggle.
    - `--dvd' doesn't work anymore, for the moment try to use :
     vlc --input dvd /dev/dvd
    - module bank is now less verbose ; use `--warn 1' to turn back
    verbosity on

2048 bytes.
-Some modifications in netlist to make it work with DVD.
-Fixed � bug in mpeg_system.c

We use INPUT_READ_ONCE many times in the input code. I think that
we should replace it with a field in input_thread_t to give more
flexibility to modules. I have done it in DVD plugin but it can't work
if input.c is limited by INPUT_READ_ONCE.

The DVD method is slower than input_ps ; but there are things to
improve.
CSS descrambling is broken.

It is very slow now but will be more adapted to the forthcoming DVD
input.
It should read the first title of many DVDs but has been tested with few.

-Beginning of ifo commands to implement DVD navigation.

I have only tested it on my computer ; so I don't know if it work
elsewhere, particularly on BSD and BeOS.

Now it generates a valid title key, but there is no sector descrambler
yet.

* It only tests encryption and authenticates disc.

The decryption does not work now et it is very ugly but I'm working on it.