Improve error logging for erlang ssh application

[olof]

I don't want the client to see internal exit reasons; instead i want to log it with a normal traceback server side. Perhaps being able to customize error messaging to the client with some kind of filter function? fun (_) -> "internal server error!" end

I've currently patched the ssh application to insert som ?LOG_NOTICE lines - this at least gives you the error message server side as well, but obviously not something that I want to propose upstream.

[olof]

Patching away strange exception handling in ssh_cli makes thing behave much better.

[olof]

Patching away strange exception handling in ssh_cli makes thing behave much better.

But not good enough, as it turns out. See #13. Still unclear where that error originates.