2006-02-19 jrandom

    * Moved the current net's reseed URL to a different location than where
      the old net looks (dev.i2p.net/i2pdb2/ vs .../i2pdb/)
    * More aggressively expire inbound messages (on receive, not just on send)
    * Add in a hook for breaking backwards compatibility in the SSU wire
      protocol directly by including a version as part of the handshake.  The
      version is currently set to 0, however, so the wire protocol from this
      build is compatible with all earlier SSU implementations.
    * Increased the number of complete message readers, cutting down
      substantially on the delay processing inbound messages.
    * Delete the message history file on startup
    * Reworked the restart/shutdown display on the console (thanks bd_!)