cp-tree.h (struct lang_type_class): Make pure_virtuals a VEC(tree).

	* cp-tree.h (struct lang_type_class): Make pure_virtuals a
	VEC(tree).
	(CLASSTYPE_INLINE_FRIENDS, CLASSTYPE_PURE_VIRTUALS): Update
	comments.
	* call.c (build_new_method_call): Don't confirm a pure virtual is
	in CLASSTYPE_PURE_VIRTUALS.  Reorder checks. Make it a warning.
	* class.c (check_methods): CLASSTYPE_INLINE_FRIENDS is a VEC(tree).
	(fixup_inline_methods, finish_struct): Likewise.
	* decl.c (finish_method): Likewise.
	* search.c (dfs_get_pure_virtuals, get_pure_virtuals):
	CLASSTYPE_PURE_VIRTUALS is a VEC(tree).
	* typeck2.c (abstract_virtuals_error): Likewise. Truncate the
	vector to avoid repeating the list in error messages.

From-SVN: r87592