Log Message:
Updated thunderbird-enigmail to 1.9.7.

Enigmail 1.9.7

Released 2017-05-13, works with Thunderbird 38.0 & newer and SeaMonkey 2.35 \ 
& newer.

Notable Changes

    This is a bugfix release

Bugs fixed

This version fixes a compatibility bug on Thunderbird 52 that makes keyserver \ 
up/downloads unusable.