Include libavformat/avformat.h before all the other libav* headers. This is safer since they may use the symbol LIBAVFORMAT_BUILD defined in avformat.h.
Include libavformat/avformat.h before all the other libav* headers.
This is safer since they may use the symbol LIBAVFORMAT_BUILD defined
in avformat.h.


git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@16589 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg