If you can remember when a paperback spy novel cost $4.95 and when telephones had dials and long cords, you are the right vintage for Neil Simon’s 1977 play “Chapter Two.“ But you don’t have to be that well-seasoned to appreciate the reliable humor and stinging pain with which Simon infused this semi-autobiographical comedy. Standing in for the playwright is George Schneider, a successful New York-based writer who pens the aforementioned spy novels for money and the occasional serious novel for artistic satisfaction. In his mid-40s, he has just lost his perfect, beloved wife of 12 years and is bereft.