A behemoth hedge fund intends to take an active role in working with Starbucks to get the coffee powerhouse back on track; should investors take this as a cue to buy shares?Starbucks (SBUX 23.25%), the iconic coffee juggernaut, has caught the attention of an elite hedge fund determined to revamp the faltering business. The fund, Elliott Management, is an investment industry whale. It acquires stakes in public companies and drives operational improvements in their businesses, making it an "activist" investor ...