[MPlayer-dev-eng] New OpenGL vo module (based on vo_gl2)

[Alex Beregszaszi]

Hi,

Don't commit this!

I'm going to care about this:
* separate common parts to gl_common.c
* vo_glx.c for x11/glx
* vo_wgl.c for win32

-- 
Alex Beregszaszi <alex at fsn.hu>
(MPlayer Core Developer -- http://www.mplayerhq.hu/)