Log Message:
Update to 38.6.0

Changelog:
Fixed in Firefox ESR 38.6
    2016-03 Buffer overflow in WebGL after out of memory allocation
    2016-01 Miscellaneous memory safety hazards (rv:44.0 / rv:38.6)
    2015-150 MD5 signatures accepted within TLS 1.2 ServerKeyExchange in server \ 
signature