Cleanup map and console after controlling terminal dies #739
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MAVProxy currently doesn't kill its map and console when the controlling tty dies. I suspect this is because multiple SIGHUPs are sent. You can test this behavior by executing mavproxy.py in xterm (xterm -hold -e mavproxy.py --map --console) and then killing the xterm process itself. You could also run mavproxy.py in a tmux pane and kill the pane.
Also, this fixes the map and console persisting when the main mavproxy.py has its input stream closed via ^D.