[theora] ffmpeg2theora 0.28 released

[dos386]

> ffmpeg2theora 0.28 released

Thank you :-)

Some suggestions (based on 0.27, no tests with 0.28 yet):

- Document prominently versions of used lib's (Theora, Vorbis, FFMPEG)
(versions of Theora and Vorbis can be peeked out with some effort,
FFMPEG is "top secret" ?)

- Better progress indicator (for example number of frames processed or
% of input file size)

- Better summary at end (total number of frames processed, broken
frames, time used for the work, source and dest file size)

- Merge FFMPEG2THEORA with FFMPEG2DIRAC (0.2.0 is out as fork of
FT0.27) and add support for FLAC output (optional, besides Vorbis)