[clutter] patches for clutter-helix-library

[Bu, Long]

 
    Now the hxmediasinklib supports i420 color space which is commonly used 
among codecs in helix.
   This patche uses gl shader to do i420--->rgba conversion. 
        
     The code repo is http://svn.o-hand.com/repos/clutter/trunk/clutter-helix

   Please review.  Thanks in advance.

Cheers.
Long

clutter-helix-library.diff
Description: clutter-helix-library.diff