* cp-abi.h (cplus_method_ptr_size): Add TO_TYPE parameter.

	* cp-abi.h (cplus_method_ptr_size): Add TO_TYPE parameter.
	(cplus_make_method_ptr): Add TYPE parameter.
	* cp-abi.c (cplus_method_ptr_size): Add TO_TYPE parameter.  Pass it
	on to current_cp_abi.method_ptr_size callback.
	(cplus_make_method_ptr): Add TYPE parameter.  Pass it on to
	current_cp_abi.make_method_ptr callback.

	* gdbtypes.c (lookup_methodptr_type): Pass target type
	argument to cplus_method_ptr_size.
	* valops.c (value_cast): Pass type argument to cplus_make_method_ptr.
	(value_struct_elt_for_reference): Likewise.

	* gnu-v3-abi.c (get_class_arch): New function.
	(vtable_address_point_offset): Add GDBARCH parameter.  Use it
	instead of current_gdbarch.  Update all callers.
	(gnuv3_get_vtable): Likewise.
	(gnuv3_get_virtual_fn): Likewise.
	(gnuv3_decode_method_ptr): Likewise.
	(gnuv3_rtti_type): Call get_class_arch to determine architecture.
	Use it instead of current_gdbarch.
	(gnuv3_virtual_fn_field): Likewise.
	(gnuv3_baseclass_offset): Likewise.
	(gnuv3_print_method_ptr): Likewise.
	(gnuv3_method_ptr_to_value): Likewise.
	(gnuv3_method_ptr_size): Add TYPE parameter.  Use it to determine
	class architecture.  Use architecture types instead of builtin types.
	(gnuv3_make_method_ptr): Likewise.

	* cp-valprint.c (cp_print_class_member): Expect pointer type
	instead of class type.  Use its length when extracting value.
	* c-valprint.c (c_val_print): Update call to cp_print_class_member.