[RFC][PATCH] krb5 => libverto main loop

[Greg Hudson]

Very close to ready.  I only found these minor issues:

* kdc/main.c: on_monitor_sighup sets sighup_received to 1, but
create_workers checks if its value is SIGHUP.  (It so happens that
SIGHUP is generally defined to 1, but I assume you didn't mean to rely
on that.)

* Line 1571 of net-server.c is extended past 79 characters and should be
wrapped.

* As discussed in IRC, kadmind invokes krb5_klog_reopen() after
receiving SIGHUP.  This behavior should be preserved in patches 4 and 5.