Normally installed via auto-update.
This plugin contains support for restarting azureus when upgrading.

1.9.2: Handle operations will file names that include commas correctly
1.9.1: Java 1.7 B21+ broke Runtime.exec(String) and stopped restarts from working.
1.9.0: Added instance port as a restart property
1.8.17: Handle renamed Java vendor id.
1.8.16: Support utf-8 action file.
1.8.15: Write a failure file on update fail.
1.8.14: New option to apply updates without a restart.
1.8.10: Fix for UI hang on adding torrent with Tor announce URL.
1.8.9: Fix Snow Leopard open-torrent issues.
1.8.11: backport of 1.8.10 fix for 4.2.0.6.
1.8.12: backport of 1.8.10 fix for 4.2.0.4.
1.8.8: Fix build error in 1.8.7.
1.8.7: Grab listen port for more of restart activity to reduce chance of a manual restart interfering with the process.
1.8.5: Linux restarter changed to launch using original script.
1.8.4: File move operation now creates parent directory if required.

1.8.3: Patch for SF mirror parsing problem on auto-update.
1.8.2: OSX restart fixes.
1.8.1: OSX native restart changes.
1.8: Support for exe4j launcher based restart.
1.7.1: More generic restart support.
1.7: Patch to 2302 to fix dht version propagation problem.
1.7: Support for moving to recycle bin.