gpgsm: Make --with-ephemeral work correct with the keyboxd.
* sm/keydb.c (kbx_client_set_ephemeral): Revert logic * kbx/kbxserver.c (cmd_setephemeral): Document option --set which can be used for better readability.
- Fixes-commit: 7428463a9db3c0586b30fe6cff884bcb35972d1e