Log Message:
version 2.8.10
- avformat/http: Match chunksize checks to master..3.0
- Changelog: fix typos
- ffserver: Check chunk size
- Avoid using the term "file" and prefer "url" in some docs \ 
and comments
- avformat/rtmppkt: Check for packet size mismatches
- zmqsend: Initialize ret to 0
- configure: check for strtoull on msvc
- http: move chunk handling from http_read_stream() to http_buf_read().
- http: make length/offset-related variables unsigned.