re PR c++/7470 (Vtable: virtual function pointers not in declaration order)

re PR c++/7470 (Vtable: virtual function pointers not in declaration order)

	PR 7470.
	C++ ABI change - vfunc ordering.
	* class.c (add_virtual_function): Remove.
	(dfs_modify_all_vtables): Take list of all declared
	virtuals. Assign all that are not in primary base.
	(check_for_override): Adjust comments.
	(create_vtable_ptr): Take single list of virtuals. Build chain
	of declared virtuals here.
	(layout_class_type): Take single list of virtuals. Adjust.
	(finish_struct_1): Keep virtuals on single list. Adjust.

From-SVN: r56021