re PR c++/29105 (segfault in add_candidates with a non template base class and a template member function)

	PR c++/29105
	* pt.c (tsubst_baselink): Substituteinto the qualifying scope.
	* semantics.c (baselink_for_fns): Build a baselink, even when
	processing a template.
	PR c++/29105
	* g++.dg/template/member6.C: New test.
	* g++.dg/parse/typename7.C: Adjust error markers.

From-SVN: r117361