Security fix for the ALT Linux 10 package thunderbird version 52.4.0-alt1

Oct. 7, 2017 Andrey Cherepanov 52.4.0-alt1

- New version (52.4.0)
- Enigmail 1.9.8.3
- Fixes:
  + CVE-2017-7793 Use-after-free with Fetch API
  + CVE-2017-7818 Use-after-free during ARIA array manipulation
  + CVE-2017-7819 Use-after-free while resizing images in design mode
  + CVE-2017-7824 Buffer overflow when drawing and validating elements with ANGLE
  + CVE-2017-7805 Use-after-free in TLS 1.2 generating handshake hashes
  + CVE-2017-7814 Blob and data URLs bypass phishing and malware protection warnings
  + CVE-2017-7825 OS X fonts render some Tibetan and Arabic unicode characters as spaces
  + CVE-2017-7823 CSP sandbox directive did not create a unique origin
  + CVE-2017-7810 Memory safety bugs fixed in Firefox 56, Firefox ESR 52.4, and Thunderbird 52.4