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	comparison.
	* pt.c (for_each_template_parm, case TEMPLATE_DECL): If it is a
	template template parameter, record its use.
	(for_each_template_parm, case TEMPLATE_TEMPLATE_PARM): Traverse
	its template arguments if exists.
	* pt.c (coerce_template_template_parms): New function equivalent
	to coerce_template_parms when IS_TMPL_PARM is true.
	(coerce_template_parms): Use it.  Remove the IS_TMPL_PARM parameter,
	all callers changed.
	(coerce_template_parms): Access ARGLIST properly when creating a
	new vector.  Only accept implicit TYPE_DECL as valid argument for
	a template template parameter when it is a base class of
	current_class_type.  Don't display error message when COMPLAIN is
	false.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@21073 138bc75d-0d04-0410-961f-82ee72b054a4