* Really disable the streaming lib packet caching
    * Synchronized a message handling point in the SDK (even though its use is
      already essentially single threaded, its better to play it safe)
    * Don't add new RepublishLeaseSetJobs on failure, just requeue up the
      existing one (duh)
    * Throttle the number of concurrent pending tunnel builds across all
      pools, in addition to simply throttling the number of new requests per
      minute for each pool individually.  This should avoid the cascading
      failure when tunnel builds take too long, as no new builds will be
      created until the previous ones are handled.
    * Factored out and extended the DataHelper's unit tests for dealing with
      long and date formatting.
    * Explicitly specify the HTTP auth realm as "i2prouter", though this
      alone doesn't address the bug where jetty asks for authentication too
      much.  (thanks orion!)
    * Updated the StreamSinkServer to ignore all read bytes, rather than write
      them to the filesystem.