update

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@1926 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

doc/TODO

 ffmpeg TODO list:
 ----------------
 
-Fabrice's TODO list: (in approximate decreasing priority order)
+Fabrice's TODO list: (unordered)
 -------------------
 - add av_log() in libavcodec and suppress all printf
 - commit new imgconvert API and new PIX_FMT_xxx alpha formats