Investors finally have good reason to believe this beleaguered company is ready for better days.By most measures, shares of The Boeing Company (BA 3.82%) should be down today. It reported lower year-over-year sales as well as a bigger loss for the three-month stretch ending in June, reflecting the continued fallout from design and manufacturing problems with some of its newer passenger jets.And yet, data from S&P Global Market Intelligence indicates that as of 2:41 p.m. ET Boeing shares are nearly 4.6% high ...