HALF A LOAF?Hard to see how Libby wriggles out of this http://www.nytimes.com/2005/10/28/politics/28cnd-leak.htmlhttp://www.talkingpointsmemo.com/archives/week_2005_10_23.php#006880[Josh Marshall] It's true that perjury charges can in some cases amount to 'gotchas', prosecutions brought for minor misstatements or possible lapses of memory.This ain't one of those cases.An indictment is always the