Log Message:
Update to 38.2.0

Changelog:
Changed Hardware acceleration is now disabled by default to avoid crashing \ 
Thunderbird
Fixed A few bugs have been fixed to avoid crashing Thunderbird

Fixed in Thunderbird 38.2
    2015-90 Vulnerabilities found through code inspection
    2015-88 Heap overflow in gdk-pixbuf when scaling bitmap images
    2015-85 Out-of-bounds write with Updater and malicious MAR file
    2015-84 Arbitrary file overwriting through Mozilla Maintenance Service with \ 
hard links
    2015-79 Miscellaneous memory safety hazards (rv:40.0 / rv:38.2)