Log Message:
libbluray: update to 1.2.1.

2020-10-25: Version 1.2.1
- Add initial support for .fmts files.
- Improve missing/broken playlist handling ("Star Trek Beyond 4K").
- Improve UHD metadata support.
- Improve BD-J compability.
- Improve error resilience and stability.
- Fix long delay in "Evangelion, You are (not) alone" menu.
- Fix JVM bootstrap issues with some Java 9 versions.
- Fix sign extended bytes when reading single bytes in BDJ.
- Fix creating organization and disc specific BD-J BUDA directories.
- Use external libudfread when available.
- Rename list_titles to bd_list_titles and add it to installed programs.