(tests) now using state variables for the "Reserved" torture test
renamed VhdlDfPrinter to VhdlDpnPrinter
sort by name in VhdlIrPrinter
made VHDL use a Namer
(vhdl) replaced direct uses of a variable's name by calls to namer
(models) port will be copied if needed in createPort
(misc) some code cleanup in IrBuilder
(models) added createState method with name argument