MINISERIES PREMIERE: This documentary miniseries, which will run for six weeks in one-hour chunks on HBO, is Andrew Jarecki’s nonfiction examination of Robert Durst, the wealthy New York real-estate heir accused of one murder and suspected of several. Jarecki made a fictional feature film inspired by one Durst case, 2010’s All Good Things, but this is a nonfiction treatment. And it’s an amazing one, because Durst, after seeing the fictional film, contacted Jarecki, and eventual