Update to 17.0.8

Changelog:
Security bugfixes.
MFSA 2013-75 Local Java applets may read contents of local file system
MFSA 2013-73 Same-origin bypass with web workers and XMLHttpRequest
MFSA 2013-72 Wrong principal used for validating URI for some Javascript components
MFSA 2013-71 Further Privilege escalation through Mozilla Updater
MFSA 2013-69 CRMF requests allow for code execution and XSS attacks
MFSA 2013-68 Document URI misrepresentation and masquerading
MFSA 2013-66 Buffer overflow in Mozilla Maintenance Service and Mozilla Updater
MFSA 2013-63 Miscellaneous memory safety hazards (rv:23.0 / rv:17.0.8)
Updated mail/thunderbird to 17.0.8
Update to 17.0.8

* Sync with thunderbird-17.0.8.
Updated mail/thunderbird-l10n to 17.0.8