The condition of two short railroad lines in Maine has been raised as a potential issue in a company’s plans to lease and reopen lines in Augusta and Bucksport from rail giant CSX. The two branches, one connecting Augusta to Waterville and the other running between Bucksport and Bangor, have been dormant for years. They’re now owned by CSX, which acquired Pan Am Railways and its hundreds of miles of Maine track four years ago. A federal review o…