irc: report mosh exit status
irc: allow setting UDP port
getpaste: add one more zerobin
remote.rdp: make it work with rdesktop again
update-authorized-keys: do not recv_key every time

I doubt it'll ever become useful. Maybe if I revoke my key one day?
update-authorized-keys: remove libfilterfile support

Never needed it. The only commit I found in authorized_keys.txt that
actually had "#if" was for testing this feature.