nvie/rq — pull request #374 by lxneng (2014-07-01 04:33:48+00:00)
Title: fix #373 , setup_loghandlers will override already exists logging settings

`logging._handlers` always is a empty WeakValueDictionary. so [setup_loghandlers](https://github.com/nvie/rq/blob/master/rq/logutils.py#L16)
will override already exists logging settings. we can use
`logging._handlerList` instead of `logging._handlers` will works fine.