[MPlayer-users] feature request: show configure options

[Roger Pack]

> What does ffmpeg -version say?
> (Assuming FFmpeg and MPlayer are built with the same FFmpeg source code.)

The kicker is that, for those of us building from source, mplayer does
its own git clone at build time, so might not be the same version as
ffmpeg on the same system, so that's why it might be nice for mplayer
to to tell us the libavcodec version et al :)
-r