Release the given VNC server.
Release the given VNC server. Will that the Server to the list of reuseable VNC servers.
VncServer to release
Calls shutdown for all managed VncServers.
Calls shutdown for all managed VncServers.
Warning: It is not safe to releay on this, the VNC server should watch the PPID (See comment of DefaultVncServer for details)
VncManager will start a new VncServer when needed.
A previously released VNC Server will be cached and reused if needed.
Because it is not safe to releay on shutdownAll, the VncServer should shutdown itself then the parent process has gone.