auth/read() should block less with 1 byte reads
auth/read() should block less with 1 byte reads

Change-Id: I8e3f74bf6532a4ef0bed07c0cdf402f087311a60
Reviewed-on: http://review.membase.org/3795
Reviewed-by: Sean Lynch <9c3328a4a1f4f8f5c18b2d5b9057163c49b93ff3@literati.org>
Tested-by: Steve Yen <ef850f73f7832052d3c6d9b5ddd3a1716d9a57f1@gmail.com>

couchbase/moxi,membase/moxi,membase/moxi,zbase/moxi,zbase/moxi,couchbase/moxi,membase/moxi,membase/moxi,couchbase/moxi,couchbase/moxi,zbase/moxi,membase/moxi,couchbase/moxi,zbase/moxi,zbase/moxi,couchbase/moxi,membase/moxi