- Only stop a plugin before update if it was running
    - Don't start a plugin after update if it was disabled
    - Disable plugin if it fails version checks at startup

               when hidden, broke inbound tunnel building

    - Cleanups
    - Remove some locking
    - Change some longs to ints to save space
    - Remove static logs

    - Auto-hidden mode for bad countries
    - Don't put addresses in our RouterInfo when hidden

When I2P terminates with an OOM error, users are advised to update
$I2P/wrapper.config. That path isn't accurate for the Debian packages.

- merge mbuild_jbigi.sh into build_jbigi.sh and drop mbuild_jbigi.sh
- make build.sh's tests optional
- try to determine the locations of JAVA_HOME and I2P

            to branch 'i2p.i2p' (head a06bf8c92a0e1195b6f98dbad3e8898339bc6053)

    - Fix failsafe shutdown hook broken in 0.8.8;
      HUP, INT, and TERM signals should now shut down cleanly.
    - Shutdown hook no longer prevents other hooks from running
    - Trap HUP, if router.gracefulHUP=true, and do graceful shutdown.
      Only under wrapper, non-Windows.
    - i2prouter stop now uses SIGTERM
    - Implement i2prouter graceful using SIGHUP (ticket #580)
    - Configure wrapper to ignore SIGUSR1 and SIGUSR2 as they will shut down
      or crash the JVM

On systems without an i2psvc group, the postinstall would fail. This change
will add the group if it doesn't exist. Also adding "||true" to the usermod
command in case the command returns a non-zero status.