redefinitions when linking twice with the same static libary.

 It's far from stable, produce file unplayable by mplayer at least,
and doesn't yet take care of video/audio synchro.
Becarefull that the header is written only when closing, and there is
no way to repair a mp4 file without its header.

* double-click is now implemented

* Added functionnality to region

* oups forgot to commit this one. still the hide/show thing.

* Timer for text control are working badly but it's the first step

and use ffmpeg postprocessing instead of vlc builtins. (It's a lot faster).

* gtk2_window.cpp: removed fading transition delay
* vlcproc.cpp: removed warning

    path, so that MSVC is happy :)

* Events work better: controls are working, not still perfectly...

* modules/misc/dummy/input.c, modules/access/file.c, include/vlc_common.h:
   msvc compilation fixes.

before first slice).
 * ffmpeg: use indeo v3 decoder (untested).
 * stream_ouput.c,libvlc.h : take care of:
 --sout-acodec,--sout-vcodec : use transcoding. (You can specify bitrate
using --sout-abitrate and --sout-vbitrate in kilobits/s).
 --sout-display: to display while streaming.
(Btw there is a problem with vout and display, it leads to a ref count = -1)

 * tried to add transparency, but it doesn't work :(