- Fix NPE with more syncing (hopefully) (ticket #770)
   - Use ByteCache for 16KB buffers

In my testing:
32 bit Windows (and, of course, 32 bit JRE) = Java added to the PATH
64 bit Windows and 64 bit JRE = Java added to the PATH
64 bit Windows and 32 bit JRE = Java *not* added to the PATH.

So...with this check-in:

- If the environment variable JAVA is set in the script, we'll use that
  manually specified Java. We will not look in the registry, but we'll check to
  make sure that the binary exists.
- If Java is found in the system path, we'll use it instead. We will not look in the
  registry.
- If the variable is not set manually and Java is not in the system path we'll
  look in the registry to find the java binary.

I've tested this in Windows XP, Vista, and 7 but it should work in any supported version
of Windows.

     and 'fd3c457f0a834ba87fead3cbdf22e31253cd4e7c'

I've failed to get in contact with him for a renewal of his certificate. Errors might appear in logs 
on installs after that date, just remove https://euve5653.vserver.de from /configreseed in console 
and you wont get errors.

     and 'e2f50f8cb50f8593ca882e94cb661c54b87d2468'

   lease set requests; reduce timeout, other cleanups

   - More DHT limits
   - Announce to backup trackers if DHT is empty
   - Use PEX and DHT info in torrent peer count
   - Don't use temp files for announces
   - TrackerClient refactoring
   - cleanups

   - Fix NPE after restart (ticket #763)
   - Move more nonces out of system properties

            to branch 'i2p.i2p' (head c917793878189c29441f69133e029cfdfe3c0895)

   - Better fix for logging dropped messages (ticket #758)
   - Implement fast receive to reduce per-message handshakes
   - Make messageReliability=none the default

   - Better privkey backup file name
   - Revert increment of privkey tunnel name
   - Move deleted privkeys to backup dir
   - Fix jsp build dependencies
   - Fix layout issue on Chrome (ticket #757)

   - Split buckets correctly
   - More exploration fixes

*Behaviors.scala should really go in net.i2p.update.* in core, but ScalaTest
doesn't seem to be picking up the cross-dependency properly and just ignores
any Spec which includes them; they will move once the build.xml is fixed.

     and '8489000cfeee5a6aa5a250b48bda4f6e2fb16b03'

   - Adjust RTT/RTO calculations
   - Better bandwidth tracking
   - Cleanup of OutboundMessageState
   - Stat tweaks
 * Transports: Increase min peer port to 1024

     and 'c2b60a59c73835b51357a706da377862d8bd5ebc'