[FIXED JENKINS-17929] Pick up transport authentication from groovysh command, by overriding run rather than main.

Defer the notification to avoid deadlock.

The size is in wchar_t, not in bytes

Added a patched version of jzlib from
https://github.com/kohsuke/jzlib/tree/jzlib-1.1.3-kohsuke-1 to better
understand the deflate problem.

Implemented the hook

Integrated the fix in Stapler.

[JENKINS-19622] Merged #989: allow background tasks to run simultaneously, preventing task blockage.

CLI hits "/cli", so the server needs to respond to this endpoint.