* tree.c (copy_template_template_parm): Use permanent_obstack.
* pt.c (unify): Remove restrictions on deduction of argument
of template template parameters.
* rtti.c (build_dynamic_cast_1): Resolve OFFSET_REF exprs.
* class.c (resolve_address_of_overloaded_function): Show list of
all candidates, when none of them match.
From-SVN: r24749
