Novelist and Playwright Sarah Schulman's new book about how homophobia begins in the family gets a critical, yet appreciative, review from the Old Mole's Frann Michel. What more besides same-sex marriage and the cultural visibility of gay people is necessary?   The book is Ties That Bind: Familial Homophobia and Its Consequences.   It can be ordered through In Other  Words Women's Bookstore,  and wherever fine books are sold.