addition to BGR24/32, just like the old XAnim decoder; it's also
interesting to note that this commit wantonly violates A'rpi's newest
nonsensical CVS policy, and I quote:
Note: if you had to put if(){ .. } over big (> 5 lines) code,
do NOT change the indent of the inner part (move it right) !
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@5421 b3059339-0415-0410-9bf9-f77b7e298cf2
