SoftoRooM -> MKVToolnix 9.0.1

Released v9.0.1 "Obstacles".
* mkvmerge: bug fix: regression in v9.0.0: the text subtitle packetizer was wrongfully assuming an encoding of UTF-8 if none was given instead of assuming the system's encoding. Fixes #1639.
2016-03-27 Moritz Bunkus <moritz@bunkus.org>
* mkvmerge: bug fix: if too many chapters had been generated with --generate-chapters then mkvmerge created a bogus entry in the meta seek element and did not actually write the chapters to the file.
* mkvmerge: bug fix: the DTS packetizer was setting the number of channels wrong sometimes when reducing to the DTS core. It was using the number of channels including the extensions instead of the channels of the core only.