Bug#591287: libmatroska: New upstream version available

[Fabian Greffrath]

Hi all!

I've brought libmatroska back into shape in our GIT repository. It is 
currently targeted at experimental, because it needs libebml from 
there. Alternatively, if libebml is uploaded to unstable before, I 
think libmatroska could go there as well.

Both libraries bump SONAME, but the transition will be marginal, since 
no other packages (build-) depend on libmatroska than mkvtoolnix and 
vlc (and additionally libmatroska depends on libebml, of course).

Feel free to upload!

  - Fabian