As part of a discussion on how to ternminate gpg-agent at logout, dkg proposed
I'm assuming this would be a new configuration option for gpg-agent. Maybe --terminate-after-idle ? What should it default to? I can send patches for this feature if you want it. the other question is what counts as "idle" -- it's not just that nothing is in the cache, right? might also want to count commands like PUTVAL as a timer reset...
which we should eventally implement.