“At age 79, the Argentine-born, Connecticut-based architect Cesar Pelli is inevitably described in newspaper and magazine profiles these days as diplomatic and genteel. In his design for the $200-million Renée and Henry Segerstrom Concert Hall in Costa Mesa, which opens Friday night, he and his firm have produced a building that brings the very same adjectives to mind. In other words, if you are optimistic enough to believe that classical music — or architecture, for that matter — is an evolving art form with the capacity to provoke as well as merely soothe, you will likely find it enormously disappointing.”