cp:
	* cp-tree.h (lookup_template_class): Add complain parm.
	* decl.c (lookup_namespace_name): Adjust call to
	lookup_template_class.
	(make_typename_type): Likewise.
	* semantics.c (finish_template_type): Likewise.
	* pt.c (lookup_template_class): Add complain parm. Adjust.
	(tsubst_aggr_type): Pass COMPLAIN down to lookup_template_class.
	(tsubst): Likewise.
testsuite:
	* g++.old-deja/g++.pt/deduct3.C: New test.

From-SVN: r39129