add IMSG_CTL_DEBUG to debug the opened fid meant to be used from kamictl to dump all the opened fid by every connection.

kill stray line

listener: enable config reload

explicitly initializes queues with STAILQ_INIT

table_static_close: don't free kp->key (is stored inside kp)

cache listener flags in struct client this saves us from the small chance that a client accepted before reconf uses the flags from a listener post reconf.

fix restart in listener drop connections in the handshake phase: the listener from where they've been accepted is now being replaced and its id is no more meaningful. Clients for which we have already sent an auth request are kept.

drop unused flag done for clients

remove clients from the splay at the start of close_conn

use serial ids and drop usage of arc4random it's not so useful here and not (directly) used anywhere else.

listener: correctly swap config after reload and don't forget to free the current config!

use STAILQ_INIT instead of memcpy(head, 0) to init the queues

fix the restart of the main process delete useless functions such as merge_config and config_clear while here.

implement clear_config for real

call clear_config from parse.y in listener_shutdown