FFVCL Encoder 6.1 and Player 6.1 Released

2016.01.14 FFVCL Encoder & Player 6.1

[Common]
* update to FFmpeg 2.8.4
* more minor improvements and some bug fix

[DLLs]
* FFmpeg DLLs built base on official ffmpeg 2.8.4
* This version is NOT compatible with previous FFmpeg DLLs.