Updated: mkvtoolnix-21.0.0-1

[David Stacey]

The following packages have been updated in the Cygwin distribution:

* mkvtoolnix-21.0.0-1
* mkvtoolnix-gui-21.0.0-1

MKVToolNix is a set of tools to create, alter and inspect Matroska
files (*.mkv, *.mka).

This is an update to the latest upstream release.

With this release, the 'mkvinfo' GUI has been migrated into
'mkvtoolnix-gui'. 'mkvinfo' is now a pure command line programme and
has been moved into the main 'mkvtoolnix' package.

Dave.