Fixes some incomplete reads with gspca driver, and makes it possible to use all 3 data acquisition methods (previous code was limited to read()).

Without this patch, the initial value on my system is for example 3, so that two much items are counted. In the second step the function breaks with a error code, when the information downloading of the non-existing item fails.
Signed-off-by: Alina Friedrichsen <x-alina@gmx.net>
Signed-off-by: Antoine Cellerier <dionoea@videolan.org>

(and print some extra debug)

Sample: http://streams.videolan.org/streams-videolan/flv/Porgi_Amor_Mirusia_123nl_Orbit.flv
This could be backported, if someone needs it.

skins2 now does some intializations (GUI) in the Run function, and therefore needs the Open function to wait till the Run thread is ready. This patch fully copies the qt4 initialization process.

Directx doesn't mean anything... It should be directdraw

This fixes VLC-Plugin issues within Safari and obviously includes the recent 3rd party library updates.

It allows to use direct rendering if the chroma/size changes.
It also avoid *always* disabling it after a seek...
(It cost about 6% of CPU for video HD on my dual core in memcpy).

It would be the proper thing to do to convert real time access_demux
to work without pf_demux callback (it includes oss,alsa,rtp,screen
at least).