2010-11-17 Marcus Brinkmann <mb@g10code.com>

• gpgcedev.c (struct pipeimpl_s): Add member monitor_rvid.

(struct monitor_s, monitor_t): New types.
(monitor_table, monitor_table_size): New static variables.
(pipeimpl_new): Initialize monitor_rvid.
(allocate_monitor): New function.
(make_pipe): Also try the monitor_table if the opnctx_table fails.
(monitor): Renamed to ...
(monitor_main): ... this. Remove from monitor_table when done.
(assign_rvid): Add to monitor table when creating monitor thread.