Finally merge the journal patch:

(keep_journal): New econfig key.
(player_main): Log player login and logout.
(recvclient): Log player input.
(ef_open_srv, ef_close_srv): Log startup and shutdown.
(update_main): Log update.

Support the common SIGHUP log rotation idiom:
(empth_wait_for_shutdown, empth_wait_for_signal): Rename.
[EMPTH_LWP, EMPTH_POSIX] (empth_init, empth_wait_for_signal): Wait for
SIGHUP as well.
(main) [SIGHUP]: Reopen journal when empth_wait_for_signal() returns
SIGHUP.

include/empthread.h

@@ -188,10 +188,9 @@ void empth_wakeup(empth_t *thread);
 void empth_sleep(time_t until);
 
 /*
- * Wait for some implementation-defined external shutdown signal.
- * Return a non-negative number identifying the signal.
+ * Wait for signal, return the signal number
  */
-int empth_wait_for_shutdown(void);
+int empth_wait_for_signal(void);
 
 /*
  * Create a semaphore.