* src/engine-backend.h (keylist, keylist_ext): Remove engine_flags.
* src/engine-gpg.c (gpg_keylist, gpg_keylist_ext): Ditto.
* src/engine.c, src/engine.h (_gpgme_engine_op_keylist): Ditto.
(_gpgme_engine_op_keylist_ext): Ditto.
* src/engine.h (GPGME_ENGINE_FLAG_OFFLINE): Remove.
* src/engine-gpgsm.c (struct engine_gpgsm): New field flags with offline
flag.
(have_gpgsm_version): New.
(gpg_set_engine_flags): Set the offline flag.
(start): Send OPTION "offline".
(gpgsm_keylist, gpgsm_keylist_ext): Remove engine_flags.  Remove
sending of OPTION "offline".
* src/keylist.c (gpgme_op_keylist_start, gpgme_op_keylist_ext_start):
Remove setting of offline flag.