Seahorse/GNOME keyring take over the GnuPG agent role
Originally created by @intrigeri on #7330 (Redmine)
For OpenPGP smartcard support, we’ve moved away from using
Seahorse/GNOME keyring as the GnuPG agent.
However, on 1.1~beta1, this change seems to be reverted. Likely a
migrated (or unmigrated?) GConf setting is wrong.
Feature Branch: bugfix/7330-disable-gnome-keyring-gpg-functionality