The Honeywell International sign sits outside of the company's former global headquarters in Morristown, New Jersey.Activist investor Elliott Management has a $5 billion-plus stake in Honeywell, and it is pushing the industrial conglomerate to break itself up into two companies.Elliott believes that Honeywell should divide itself along its two primary business lines — Aerospace, which supplies engines and avionics to the military and commercial users, and Automation,  which is a supplier of sensors and cont ...