Based on the first of Kenneth Robeson's 181 adventure-packed Doc Savage books, Doc Savage: The Man of Bronze hits the screen with all its gee-whiz, gung-ho spirit intact. And its bold protagonist, who along with having a Herculean body is also a surgeon, linguist and inventor, remains determined to do right to all and wrong to no one. Ron Ely (TV's Tarzan) plays the strapping Savage in this high-camp, big- heroics tale of his trek into