cleanups, logging, and error propagation fixes

which aparently keeps running and does not sleep according to profiling.

     - Add persistent client key support to SOCKS IRC

    * Update: Select old update URL if no unpack200 available

      - Use new receivedAsReply flag in LeaseSet to mark
        those received as response to a query
      - Mark which methods in FloodfillPeerSelector may return
        our own hash
      - Redefine selectNearest() so it may return our own hash,
        so it can be used for closeness measurement
      - Redefine findNearestRouters() to return Hashes
        instead of RouterInfos
      - Fix LeaseSet response decisions for floodfills, based
        on partial keyspace and closeness measurements
      - List only count of published leasesets in netdb

      starting update - caused by refreshing summary bar
      (thx 'backup'!)

      causing frequent RouterInfo updates and incorrect
      addition of introducers, caused by config.jsp handling

      - More listing fixes (more thanks to 'backup')
      - Start end game a little sooner

      on Java 1.5
    * Remove jetty from updater - it's been in for a few
      releases, and i2psnark now has its own listHTML method

    Loading a class would be one of them!
    So we do a quick check first, If it bombs out, we delay and try again.
    If it bombs after that, then we throw the ClassNotFoundException.

      - Set classpath for specific client only, not for the whole JVM
      - Use ConfigDir() not AppDir()