FFVCL Encoder 5.7 and Player 5.7 Released

2014.10.16 FFVCL Encoder & Player 5.7

[Common]
* support Delphi XE7
* update to FFmpeg 2.4.2

[DLLs]
* FFmpeg DLLs built base on official ffmpeg 2.4.2
* This version is NOT compatible with previous FFmpeg DLLs.