[theora] Theora support in MPLAYER again

[dos386]

http://bugzilla.mplayerhq.hu/show_bug.cgi?id=1788 INVALID
http://bugzilla.mplayerhq.hu/show_bug.cgi?id=1774 INVALID
http://bugzilla.mplayerhq.hu/show_bug.cgi?id=1771 INVALID

> Bisecting shows that the first broken revision is 31225
> Not a bug in MPlayer. Fixed in FFmpeg SVN r25052

This one is fixed in 32492 from 2010-10-14 ... but

I recently made another shocker discovery: there is a MPLAYER binary
from 2008 having the Offset-BUG

http://bugzilla.mplayerhq.hu/show_bug.cgi?id=1492 NEW

fixed. Regrettably I don't have the patch nor source code and most
likely it is not available anywhere.

This old binary suffers from several other known Ogg / Theora issues, though.