Updating spymemcached to 2.10.1

Change-Id: Ide6d9c0191fc91a492b64022e2f12afb6f76083c
Reviewed-on: http://review.couchbase.org/29468
Reviewed-by: Michael Nitschinger <michael.nitschinger@couchbase.com>
Tested-by: Michael Nitschinger <michael.nitschinger@couchbase.com>