Updated LAV Filters to 0.59.1-22-a6514fd (custom build based on 0.59.1-17-6da6023).

Important changes:
 - LAV Video: Fix a crash with DXVA on AMD cards when stopping playback (fixes #3601).
 - LAV Audio: Fix a crash when using old versions of the ArcSoft DTS Decoder to handle DTS decoding internally (fixes #3676).
CID 966234.
CID 966348.
Use pragma once.
Clean up structs/enums.
CID 966060.
Update to astyle v2.04.
New options.
Update Changelog.txt.