So, Apple is having a bad year, you say?With shares hitting an all-time high this week and the gap in performance narrowing over the past month, that conversation can now be put to rest.The uptick has coincided with reports Apple has boosted the production rate of its iPhones, instructing manufacturers to build 90 million iPhones this year, a 20% increase on the 75 million units it produced last year.The renewed optimism in all things Apple is not surprising to J.P. Morgan’s Samik Chatterjee. T