Break out Span variables into their own file.
Break out Span variables into their own file.

malcolmgreaves/factorie,joprice/factorie,Craigacp/factorie,strubell/factorie,melisabok/factorie,pogren-oracle/factorie,patverga/factorie,zxsted/factorie,digitalreasoning/factorie-scala-210,factorie/factorie,asubbaswamy/factorie,hlin117/factorie