mysql55: update from 5.5.39 to 5.5.40, potentially fixes CVE-2014-6464, CVE-2014-6469, CVE-2014-6491, CVE-2014-6494, CVE-2014-6496, CVE-2014-6500, CVE-2014-6507, CVE-2014-6555, CVE-2014-6559