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Long lines of text which wrapped on the terminal corrupted the output shown by knotty2. This patch catches such errors by becomming aware of the terminal size. It also catches terminal window size change events and adapting to those changes using a signal handler. Based on a patch from Jason Wessel with several tweaks and enhancements such as use of chained signal handlers and covering all output messages. (Bitbake rev: 9afc9e4d14abec5ac326851d4bb689c1e8d45a43) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>