for exploratory tunnels or closest-hop in client tunnels

- Set lookup type flags even if no reply tunnel specified
- Reduce object churn when writing some messages

to where the classloader can find them.
Throw a better error message if not found.

- Fix bug that left server acceptor thread running after close
- Add destroy() methods to release all resources when closing a tunnel for good,
  particularly the streaming timer threads
- Use COWAL to prevent concurrency problems
- Javadocs
Streaming:
- Don't return null from accept() any more; actually throw
  ConnectException as the javadocs have always specified
- Throw ConnectException from accept() if interrupted; previously caught and ignored
- Throw exceptions from ConnectionHandler.accept(), not higher up
- Close ServerSocket when ConnectionManager is shut down
- Synchronize setActive(), clear queue when starting to accept,
  better handling of calls that don't change state
- Javadocs
ConfigClientsHelper: Call isPluginRunning() less often
PluginStarter: Simplify detection of active threads

Above changes mostly in support of zzzot plugin implementing ClientApp
and being able to shut down completely so there are no threads
in its thread group, so /configclients will all show status as stopped.
Previously, the I2PTunnelServer acceptor thread and
one or more streaming timer threads would remain.

     and 'f61d617d9bfd5759366102b0b5ff45effde08e84'

- move signing to ant macros so they can be used by multiple build targets
- add support for signed devbuilds
- add support for generating i2pseeds.su3 (for testing)

Source:
https://github.com/str4d/ed25519-java
Git commit:
58e4efadf972f4dc4f67c05152f82b49fb22bac6

Source:
https://github.com/str4d/ed25519-java
Git commit:
58e4efadf972f4dc4f67c05152f82b49fb22bac6

so peer ordering does not change across restarts

Transports: If we are non-DSA, check for compatibility before connecting out

don't pollute Hash cache

due to previous bugs

            to branch 'i2p.i2p' (head e7f2b0990f1ff9ab0e0d8633ac2faf35a993b917)

  - Add new opentrackers, remove welterde
  - Support multiple default opentrackers
  - Don't link to opentrackers at the top

Recognize router.newsRefreshFrequency=0 as "never"