* class.c (finish_struct_methods): Remove unncessary code.
	(add_implicitly_declared_members): Create declarations for default
	constructors and copy constructors lazily.
	* cp-tree.h (lang_type_class): Remove lazy_default_ctor and
	lazy_copy_ctor.
	(CLASSTYPE_LAZY_DEFAULT_CTOR): New macro.
	(CLASSTYPE_LAZY_COPY_CTOR): Likewise.
	* decl2.c (check_classfn): Robustify.
	(locate_dtor): Handle empty CLASSTYPE_METHOD_VEC.
	(locate_ctor): Handle lazy default constructors.
	(locate_copy): Handle lazy copy constructors.
	(implicitly_declare_fn): Make sure we're looking at the
	TYPE_MAIN_VARIANT for a class before creating functions.  Don't
	set TYPE_HAS_CONSTRUCTOR.
	(lazily_declare_fn): New function.
	* name-lookup.c (constructor_name_full): Simplify.
	* search.c (lookup_fnfields_1): Lazily create methods, as
	necessary.
	(lookup_for_overrides): Handle empty CLASSTYPE_METHOD_VEC.

From-SVN: r84851