vaapi: steal libvo/vo_vaapi.c

Copy VA-API video output from git://gitorious.org/vaapi/mplayer.git
last commit f1ad459a263f8537f6cba3bf479daea61c6104b9, Jul 19 2012

Original-author: Gwenole Beauchesne <gb.devel@gmail.com>
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
vaapi: add configure options

Add libva autodetection and link vo_vaapi

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
vaapi: add image formats

Based on commit 8bd591b02a5084216171ec577190f3cfe1eccd01

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
rom: Konstantin Khlebnikov <khlebnikov@openvz.org>

vaapi: fix compilation

Quick fix. Only X11. No hwaccel. No GL. EOSD seems half broken.
But it works!

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>