Sync with new options.h default.

Index: perdition/perdition.8
--- perdition/perdition.8.orig
+++ perdition/perdition.8
@@ -830,10 +830,11 @@ Perdition allows two idle timeouts to be configured. \
 is used before the user has been successfully authenticated with the
 back-end server. And after that \-\-timeout is used.
 
-The default value for both timeouts is is 1800.
-A timeout value of 0 means that the timeouts are disabled and clients and
-back\-end servers can idle indefinitely, though in practice a TCP timeout
-will be in effect.
+The default value for \-\-authentication_timeout is 60 seconds.
+The default value for \-\-timeout is 1800 seconds.
+A timeout value of 0 means that the timeouts are disabled and clients
+and back\-end servers can idle indefinitely, though in practice a
+TCP timeout will be in effect.
 .SH LOOP DETECTION
 The greeting that perdition displays when accepting an incoming connection
 is "+OK POP3 Ready <hostname>" or "* OK IMAP4 Ready <hostname>" in POP3 and
