Gloria Steinem has lived such a long and significant life that it takes four actresses to play her—including two Oscar winners—in “The Glorias.” That device of having multiple performers portray the veteran journalist and activist, and sometimes even having them engage in conversations with each other, is the most effective element of director Julie Taymor’s effort to encompass a whole, complicated life while also avoiding traditional biopic tropes. My review, at RogerEbert.com.