use mmap in read and write data to file
rearrange option and usage
add mmap support
new inbox queue, move unwatch client to worker thread
add num job monitor, sleep time accordingly
common array fd set, specify epoll interface, optimize for this
add client to watch
error detect, comform to new ae API;
no support for tmp file tracking
new ae API
add make file
remove *.pro.user
Merge branch 'imgsrv'