Update LAV Filters to 0.59.1-107-2d6cc0e (custom build based on 0.59.1-102-61c89de).

Important changes:
 - LAV Splitter: The current/average bitrate is now shown in the Information panel (fixes #3540).
 - LAV Video: Some decoding regressions have been fixed.
 - Update libbluray to 0.5.0.