A little clean-up in the imports

TODO

@@ -2,16 +2,9 @@ To be done :
     Use an algorithm to choose which connections to keep and/or establish
     instead of pure randomness
         number of routes / tunnel
-        favorise most used roads
 
     ( Write docstrings for all class/methods/functions )
-
-    We should replace dead connection much more often than we refresh tunnels otherwise, it brings instability
-    	If we do this, we must protect some tunnels
     	
-To be discussed:
-   Project name ?
-           Resinet/res(6)net/rs(6)net
-           ResiliAnt ( ants : find shortest paths, don't die easily
-                            ~ are resilients )
-           rescan6
+    Use latency in babeld
+
+    Warn babeld about the tunnels wich are about to be deleted. Maybe we could just increase the cost. 

re6st-registry.py

 #!/usr/bin/env python
-import argparse, math, random, select, smtplib, sqlite3, string, socket
+import argparse, random, select, smtplib, sqlite3, string, socket
 import subprocess, time, threading, traceback, errno, logging, os, xmlrpclib
 from SimpleXMLRPCServer import SimpleXMLRPCServer, SimpleXMLRPCRequestHandler
 from email.mime.text import MIMEText

re6stnet.py

 #!/usr/bin/env python
-import argparse, errno, os, select, subprocess, sqlite3, time, logging
+import os, sys, select, time
+import argparse, subprocess, sqlite3, logging, traceback
 from argparse import ArgumentParser
 from re6st import plib, utils, db, upnpigd, tunnel
 
@@ -62,8 +63,6 @@ def getConfig():
     # Tunnel options
     _('--pp', nargs=2, action='append',
             help='Port and protocol to be used by other peers to connect')
-    _('--tunnel-refresh', default=300, type=int,
-            help='time (seconds) to wait before changing the connections')
     _('--dh', required=True,
             help='Path to dh file')
     _('--ca', required=True,
@@ -77,6 +76,9 @@ def getConfig():
     _('--refresh-count', default=1, type=int,
             help='''The number of connections to drop when refreshing the
                     connections''')
+    _('--tunnel-refresh', default=300, type=int,
+            help='time (seconds) to wait before changing the connections')
+
     # Openvpn options
     _('openvpn_args', nargs=argparse.REMAINDER,
             help="Common OpenVPN options (e.g. certificates)")