GNULESSERGENERALPUBLICLICENSEVersion2.1,February1999Copyright(C)1991,1999FreeSoftwareFoundation,Inc.51FranklinStreet,FifthFloor,Boston,MA02110-1301USAEveryoneispermittedtocopyanddistributeverbatimcopiesofthislicensedocument,butchangingitisnotallowed.[Thisis