* modules/misc/playlist : native playlist export
* configure.ac : playlist and export need libxml2

   + check for lrintf() and fallback on rint().

* src/input/control.c: INPUT_ADD/DEL_BOOKMARK also modifies the "bookmarks" input option so the bookmarks are kept even when the input is stopped.

* src/input/input.c:
   + introduced input_item_t that is shared between the playlist/vlm and the input thread (contains input name, options, infos, etc...).
   + changed prototype of input_CreateThread() to input_thread_t *input_CreateThread( vlc_object_t *, input_item_t * ).
* ALL: use input_item_t and INPUT_ADD_INFO when necessary.

now you can see at least something with those SAP announces with Latin char encoding.

Works around an issue with some playlist items added by the sap interface : since they aren't coded in UTF8, a blank string is printed. 

This doesn't correct this issue, but at least, it doesn't prevent the item proprieties window from opening anymore.

Modified a little default skin
 -> hiding video window

 (I have changed a ((uint8_t *)op.bytes) -= 4; and I'm not sure what it
was meant to do as op.bytes is a "long")
 

 * livedotcom, mkv: removed all TAB_*.

cast of lvalue. -> Don't use them anymore in C++ code.
( Don't use *(void**)&p, it won't work because of aliasing problem).

 * vlc_meta.h: don't use TAB_* as this file is included in C++ code.

 input: fixed uninitialised variable (i_microsecondperframe for subs)

 from stable, but begin to work. (Tested only with TS).
 Limitation: no synchro with others stream if any (anyway, it would be
a bit stupid to have such stream).
 

to chain demuxer.
    - stream_DemuxNew: create a special stream_t, launch a thread that
    will open a demuxer, and call p_demux->pf_demux until asked to die.
    - stream_DemuxSend: append a block to be used by the new demuxer.
    - stream_DemuxDelete : free all data...

 (each vlc_object_find has to be followed by a vlc_object_release once
the object isn't needed anymore)

 Btw, I think we should better do that update in src/input/input_dec.c,
this way it will work with every decoder AND a decoder should not touch
p_input (decoders will be used by transcode for instance ...)

* Allow to modify subtitle delay on the fly and implement hotkeys 
  (h and j)

* When framerate is available with subrip, use sub-fps to make corrections
  (sub-fps default value is now 0, if left to this value, 25fps will be
   assumed in microdvd mode and no correction will be applied in subrip)

Main problem is that when seeking in the subtitles, you easily get
several of them displayed. Maybe we could add a flag to subpicture_t,
like SUBTITLE_PICTURE to say that only one of them must be displayed at
a time, but that other subpictures (OSD, ...) can remain present on the
screen at the same time.

this.  (But most poeple won't notice the improvement since video
switching is broken.)