mperham/dalli — pull request #477 by flypiggy (2014-08-01 02:54:24+00:00)
Title: fixed the sasl_authentication error

when server need authentication, the version action before authentication will case the not authenticated exception and the authentication will not be execute.

in authentication, sometimes the memcached server will return string like ''PLAIN/u0000'' make the authentication failed(example aliyun server in china).
so i replace the /u0000 into ' ' to avoid this problem.