Updated thunderbird packages fix security vulnerability

Several flaws were found in the processing of malformed web content. A web page containing malicious content could cause Thunderbird to crash or, potentially, execute arbitrary code with the privileges of the user running Thunderbird (CVE-2015-4513, CVE-2015-7189, CVE-2015-7197, CVE-2015-7198, CVE-2015-7199, CVE-2015-7200). A same-origin policy bypass flaw was found in the way Thunderbird handled certain cross-origin resource sharing (CORS) requests. A web page containing malicious content could cause Thunderbird to disclose sensitive information (CVE-2015-7193).