* cos.scm (/method-lookup): Delete arg virtual?, all callers updated.

	* cos.scm (/method-lookup): Delete arg virtual?, all callers updated.
	(method-proc): Delete.
	(method-make-virtual!, method-make-virtual-forward!): Delete.
	* ifield.scm (<ifield> field-start): Update.
	(<ifield> field-length, pretty-print): Update.
	(<multi-ifield> field-length, field-start, pretty-print): Update.
	* sid-cpu.scm (/gen-hardware-struct): Use gen-defn instead of gen-decl.
	* sid.scm (<scalar> gen-sym-defn): Renamed from gen-sym-decl.
	(<array> gen-sym-defn): Ditto.
	(<hardware-base> gen-defn): Renamed from gen-defn.
	(<hw-register> gen-type): Update.
	(<hw-register> gen-defn): Renamed from gen-sym-decl, rewrite.
	(<hw-memory>, <hw-address>, <hw-iaddress> gen-type): Update.
	(<hw-memory>, <hw-address> gen-defn): Renamed from gen-sym-decl.
	(<hw-immediate> gen-type): Update.
	(<hw-immediate> gen-defn): Renamed from gen-sym-decl, rewrite.
	* sim-cpu.scm (/gen-hardware-struct): Use gen-defn instead of gen-decl.
	* sim.scm (<scalar> gen-sym-defn): Renamed from gen-sym-decl.
	(<array> gen-sym-defn): Ditto.
	(<hardware-base> gen-defn): Renamed from gen-defn.
	(<hw-register> gen-type): Update.
	(<hw-register> gen-defn): Renamed from gen-sym-decl, rewrite.
	(<hw-memory>, <hw-address>, <hw-iaddress> gen-type): Update.
	(<hw-memory>, <hw-address> gen-defn): Renamed from gen-sym-decl.
	(<hw-immediate> gen-type): Update.
	(<hw-immediate> gen-defn): Renamed from gen-sym-decl, rewrite.