* gpgsm.h (struct server_control_s): Remove member dirmngr_seen.
* call-dirmngr.c (dirmngr2_ctx, dirmngr_ctx_locked)
(dirmngr2_ctx_locked): New global variables.
(prepare_dirmngr): Don't check dirmngr_seen anymore.
(start_dirmngr): Move bunch of code to ...
(start_dirmngr_ext): ... this new function.
(release_dirmngr, start_dirmngr2, release_dirmngr2): New
functions.
(gpgsm_dirmngr_isvalid): Call release_dirmngr.
(gpgsm_dirmngr_lookup): Call release_dirmngr. If dirmngr_ctx is
locked, use dirmngr2_locked.
(gpgsm_dirmngr_run_command): Call release_dirmngr.