视频转码、切分，生成HTTP Live Streaming点播视频流批处理脚本，
同时支持生成8种码率

Signed-off-by: wangwang4git <wangwang4whu@126.com>
增加归并.m3u8文件功能

Signed-off-by: wangwang4git <wangwang4whu@126.com>
Merge branch 'master' of https://github.com/wangwang4git/streaming