update example file.

remove un-used var.

update the conn->closing=0 when onClose fetch exception.

use swArray store the http_client.

fixed check the timer->fd.

fixed compile failed in arm system.

Merge pull request swoole#168 from betashepherd/master

patch code

fixed core dump when client reconnect to server.

Merge pull request swoole#161 from betashepherd/master

patch code

Merge pull request swoole#157 from betashepherd/master

patch code for task worker user/group set